MESON Chess Problem Database
Problem Display
PID: 261567 (8/1p3Bp1/1B1p2p1/2nP2P1/2N1k1pN/3n2P1/1P3R1K/3Q4 w - - 0 1)
Johner, Hans
Neue Zurcher Zeitung, 1949
#2
11 + 8
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Kd4
- 2.Rf4#
- 1...Sc1
- 2.Bxg6#
- 2.Rf4#
- 1...Se1
- 2.Bxg6#
- 2.Re2#
- 2.Rf4#
- 1...Sxb2
- 2.Bxg6#
- 2.Re2#
- 2.Rf4#
- 1...Sxf2
- 2.Bxg6#
- 1...Sb4
- 2.Bxg6#
- 2.Re2#
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Se5
- 2.Re2#
- 2.Rf4#
- 1...Sb3
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Sa4
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Sa6
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Se6
- 2.Qh1#
- 1...Sd7
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Kd4
- Tries
- 1.Kg1?
- 1...Kd4
- 2.Rf4#
- 1...Sxb2
- 2.Bxg6#
- 2.Re2#
- 2.Rf4#
- 1...Sxf2
- 2.Bxg6#
- 1...Sc1
- 2.Bxg6#
- 2.Rf4#
- 1...Se1
- 2.Bxg6#
- 2.Re2#
- 2.Rf4#
- 1...Sb4
- 2.Bxg6#
- 2.Re2#
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Se5
- 2.Re2#
- 2.Rf4#
- 1...Sb3
- 2.Re2#
- 2.Qe2#
- 1...Sa4
- 2.Re2#
- 2.Qe2#
- 1...Sa6
- 2.Re2#
- 2.Qe2#
- 1...Sd7
- 2.Re2#
- 2.Qe2#
- 1...Se6!
- 1...Kd4
- 1.Sg2?
- 1...Kd4
- 2.Rf4#
- 1...Sxb2
- 2.Bxg6#
- 2.Rf4#
- 1...Sxf2
- 2.Bxg6#
- 1...Sc1
- 2.Bxg6#
- 2.Rf4#
- 1...Se1
- 2.Bxg6#
- 2.Rf4#
- 1...Sb4
- 2.Bxg6#
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Se5
- 2.Sxd6#
- 2.Rf4#
- 1...Sb3
- 2.Qe2#
- 1...Sa4
- 2.Qe2#
- 1...Sa6
- 2.Qe2#
- 1...Sd7
- 2.Qe2#
- 1...Se6!
- 1...Kd4
- 1.Sf5?
- threat
- 2.Qe2#
- 2.Qh1#
- 1...Sxb2
- 2.Sfxd6#
- 2.Rf4#
- 2.Qe2#
- 2.Qd4#
- 1...Sxf2
- 2.Sfxd6#
- 1...Sf4
- 2.Sfxd6#
- 2.Rxf4#
- 1...Se6
- 2.Qh1#
- 1...Sc1
- 2.Sfxd6#
- 2.Rf4#
- 2.Qd4#
- 1...Se1
- 2.Sfxd6#
- 2.Rf4#
- 2.Qe2#
- 2.Qd4#
- 1...Sb4
- 2.Sfxd6#
- 2.Rf4#
- 2.Qe2#
- 2.Qd4#
- 1...Se5
- 2.Scxd6#
- 2.Sfxd6#
- 2.Rf4#
- 2.Qe2#
- 2.Qd4#
- 1...gxf5!
- threat
- 1.Sxg6?
- 1...Kd4
- 2.Rf4#
- 1...Sxb2
- 2.Rf4#
- 1...Se6
- 2.Qh1#
- 1...Sc1
- 2.Rf4#
- 1...Se1
- 2.Rf4#
- 1...Sb4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Se5
- 2.Rf4#
- 1...Sb3
- 2.Sxd6#
- 2.Qe2#
- 2.Qh1#
- 1...Sa4
- 2.Sd2#
- 2.Sxd6#
- 2.Qe2#
- 2.Qh1#
- 1...Sa6
- 2.Sd2#
- 2.Sxd6#
- 2.Qe2#
- 2.Qh1#
- 1...Sd7
- 2.Sd2#
- 2.Sxd6#
- 2.Qe2#
- 2.Qh1#
- 1...Sxf2!
- 1...Kd4
- 1.Bxc5?
- threat
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Sxb2
- 2.Bxg6#
- 2.Re2#
- 2.Rf4#
- 2.Qe2#
- 2.Qd4#
- 1...Sxf2
- 2.Bxg6#
- 2.Qe2#
- 2.Qd4#
- 1...Sxc5
- 2.Bxg6#
- 2.Re2#
- 2.Rf4#
- 1...Sc1
- 2.Bxg6#
- 2.Rf4#
- 2.Qd4#
- 1...Se1
- 2.Bxg6#
- 2.Re2#
- 2.Rf4#
- 2.Qe2#
- 2.Qd4#
- 1...Sb4
- 2.Bxg6#
- 2.Re2#
- 2.Rf4#
- 2.Qe2#
- 2.Qd4#
- 1...Sf4
- 2.Rxf4#
- 2.Qd4#
- 1...Se5
- 2.Sxd6#
- 2.Re2#
- 2.Rf4#
- 2.Qe2#
- 2.Qd4#
- 1...dxc5!
- threat
- 1.Be6?
- 1...Kd4
- 2.Rf4#
- 1...Sxb2
- 2.Re2#
- 2.Rf4#
- 1...Sxe6
- 2.Qh1#
- 1...Sc1
- 2.Rf4#
- 1...Se1
- 2.Re2#
- 2.Rf4#
- 1...Sb4
- 2.Re2#
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Se5
- 2.Re2#
- 2.Rf4#
- 1...Sb3
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Sa4
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Sa6
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Sd7
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Sxf2!
- 1...Kd4
- 1.Bxg6+?
- 1...Kd4
- 2.Qxd3#
- 1...Kxd5!
- 1...Kd4
- 1.Bg8?
- 1...Kd4
- 2.Rf4#
- 1...Sxb2
- 2.Re2#
- 2.Rf4#
- 1...Se6
- 2.Qh1#
- 1...Sc1
- 2.Rf4#
- 1...Se1
- 2.Re2#
- 2.Rf4#
- 1...Sb4
- 2.Re2#
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Se5
- 2.Re2#
- 2.Rf4#
- 1...Sb3
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Sa4
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Sa6
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Sd7
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Sxf2!
- 1...Kd4
- 1.Rf1?
- 1...Kd4
- 2.Rf4#
- 1...Sxb2
- 2.Bxg6#
- 2.Re1#
- 2.Rf4#
- 1...Sc1
- 2.Bxg6#
- 2.Rf4#
- 1...Se1
- 2.Bxg6#
- 2.Rxe1#
- 2.Rf4#
- 1...Sf2
- 2.Bxg6#
- 2.Re1#
- 1...Sb4
- 2.Bxg6#
- 2.Re1#
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Se5
- 2.Re1#
- 2.Rf4#
- 1...Sb3
- 2.Qe2#
- 1...Sa4
- 2.Qe2#
- 1...Sa6
- 2.Qe2#
- 1...Sd7
- 2.Qe2#
- 1...Se6!
- 1...Kd4
- 1.Rf3?
- 1...Kd4
- 2.Rf4#
- 2.Qxd3#
- 1...Sxb2
- 2.Bxg6#
- 2.Re3#
- 2.Rf4#
- 1...Se6
- 2.Qxd3#
- 1...Sc1
- 2.Bxg6#
- 2.Re3#
- 2.Rf4#
- 1...Se1
- 2.Bxg6#
- 2.Re3#
- 2.Rf4#
- 1...Sf2
- 2.Bxg6#
- 2.Re3#
- 2.Rf4#
- 1...Sb4
- 2.Bxg6#
- 2.Re3#
- 2.Rf4#
- 1...Sf4
- 2.Re3#
- 2.Rxf4#
- 1...Se5
- 2.Sxd6#
- 2.Re3#
- 2.Rf4#
- 1...Sb3
- 2.Re3#
- 2.Qe2#
- 2.Qxd3#
- 1...Sa4
- 2.Re3#
- 2.Qe2#
- 2.Qxd3#
- 1...Sa6
- 2.Re3#
- 2.Qe2#
- 2.Qxd3#
- 1...Sd7
- 2.Re3#
- 2.Qe2#
- 2.Qxd3#
- 1...gxf3!
- 1...Kd4
- 1.Rf5?
- 1...Kd4
- 2.Rf4#
- 1...Sxb2
- 2.Rf4#
- 1...Se6
- 2.Sd2#
- 2.Sxd6#
- 2.Qe2#
- 2.Qh1#
- 1...Sc1
- 2.Rf4#
- 1...Se1
- 2.Rf4#
- 1...Sf2
- 2.Rf4#
- 1...Sb4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Se5
- 2.Rf4#
- 1...Sb3
- 2.Sxd6#
- 2.Qe2#
- 2.Qh1#
- 1...Sa4
- 2.Sd2#
- 2.Sxd6#
- 2.Qe2#
- 2.Qh1#
- 1...Sa6
- 2.Sd2#
- 2.Sxd6#
- 2.Qe2#
- 2.Qh1#
- 1...Sd7
- 2.Sd2#
- 2.Sxd6#
- 2.Qe2#
- 2.Qh1#
- 1...gxf5!
- 1...Kd4
- 1.Rf6?
- 1...Kd4
- 2.Rf4#
- 1...Sxb2
- 2.Bxg6#
- 2.Rf4#
- 1...Se6
- 2.Qh1#
- 1...Sc1
- 2.Bxg6#
- 2.Rf4#
- 1...Se1
- 2.Bxg6#
- 2.Rf4#
- 1...Sf2
- 2.Bxg6#
- 2.Rf4#
- 1...Sb4
- 2.Bxg6#
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Se5
- 2.Rf4#
- 1...Sb3
- 2.Qe2#
- 2.Qh1#
- 1...Sa4
- 2.Qe2#
- 2.Qh1#
- 1...Sa6
- 2.Qe2#
- 2.Qh1#
- 1...Sd7
- 2.Qe2#
- 2.Qh1#
- 1...gxf6!
- 1...Kd4
- 1.Qb1?
- threat
- 2.Rf4#
- 1...Se6
- 2.Qh1#
- 1...Kd4!
- threat
- 1.Qd2?
- threat
- 2.Qe3#
- 1...Kd4
- 2.Rf4#
- 1...Se6!
- threat
- 1.Qxd3+?
- 1...Sxd3
- 2.Re2#
- 1...Kxd3!
- 1...Sxd3
- 1.b3?
- 1...Sxf2
- 2.Bxg6#
- 1...Sxb3
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Se6
- 2.Qh1#
- 1...Sc1
- 2.Bxg6#
- 2.Rf4#
- 1...Se1
- 2.Bxg6#
- 2.Re2#
- 2.Rf4#
- 1...Sb2
- 2.Bxg6#
- 2.Re2#
- 2.Rf4#
- 1...Sb4
- 2.Bxg6#
- 2.Re2#
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Se5
- 2.Re2#
- 2.Rf4#
- 1...Sa4
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Sa6
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Sd7
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Kd4!
- 1...Sxf2
- 1.b4?
- 1...Sxf2
- 2.Bxg6#
- 1...Sxb4
- 2.Bxg6#
- 2.Re2#
- 2.Rf4#
- 1...Se6
- 2.Qh1#
- 1...Sc1
- 2.Bxg6#
- 2.Rf4#
- 1...Se1
- 2.Bxg6#
- 2.Re2#
- 2.Rf4#
- 1...Sb2
- 2.Bxg6#
- 2.Re2#
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Se5
- 2.Re2#
- 2.Rf4#
- 1...Sb3
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Sa4
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Sa6
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Sd7
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Kd4!
- 1...Sxf2
- 1.Kg1?
- Keys
- 1.Rd2!
- 1...Kd4
- 2.Qxg4#
- 1...Sxb2
- 2.Bxg6#
- 2.Re2#
- 2.Rd4#
- 2.Qe2#
- 2.Qxg4#
- 2.Qe1#
- 2.Qh1#
- 1...Se6
- 2.Qh1#
- 1...Sc1
- 2.Bxg6#
- 2.Rd4#
- 2.Qxg4#
- 2.Qh1#
- 1...Se1
- 2.Bxg6#
- 2.Re2#
- 2.Rd4#
- 2.Qe2#
- 2.Qxg4#
- 2.Qxe1#
- 1...Sf2
- 2.Bxg6#
- 2.Re2#
- 2.Rd4#
- 2.Qe2#
- 2.Qe1#
- 1...Sb4
- 2.Bxg6#
- 2.Re2#
- 2.Rd4#
- 2.Qe2#
- 2.Qxg4#
- 2.Qe1#
- 2.Qh1#
- 1...Sf4
- 2.Rd4#
- 1...Se5
- 2.Re2#
- 2.Rd4#
- 2.Qe2#
- 2.Qe1#
- 1...Sb3
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Sa4
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Sa6
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Sd7
- 2.Re2#
- 2.Qe2#
- 2.Qh1#
- 1...Kd4
- 1.Rd2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- K(b);P-FLIGHT,P_SPINS(a)::R(C)
- S(a);XR(C)::B(K),XP(f)
- S(a);N_GUARD::R1(C),XS(a)
- S(d);::QAB(A)
- Tries
- Try
- K(D);S_FLIGHT
- Vars
- K(b);P-FLIGHT,P_SPINS(a)::R(C)
- S(a);XR(C)::B(K),XP(f)
- S(a);N_GUARD::R1(C),XS(a)
- Refutation
- S(d);
- Try
- S(G);
- Vars
- K(b);P-FLIGHT,P_SPINS(a)::R(C)
- S(a);XR(C)::B(K),XP(f)
- S(a);N_GUARD::R1(C),XS(a)
- S(d);::QAR2(A)
- Refutation
- S(d);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- S(a);XR(C)::S(G),XP(e)
- S(d);::QAB(A)
- Refutation
- P(f);XS(G)
- Try
- S(G);XP(f)
- Vars
- K(b);P-FLIGHT,P_SPINS(a)::R(C)
- S(a);N_GUARD,XP(B)::R1(C)
- S(d);::QAB(A)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- Refutation
- S(a);XR(C)
- Try
- B(J);XS(d)
- Threat
- DUALS(3)
- Refutation
- P(e);XB(J)
- Try
- B(K);
- Vars
- K(b);P-FLIGHT,P_SPINS(a)::R(C)
- S(d);XB(K)::QAB(A)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- Refutation
- S(a);XR(C)
- Try
- B(K);CHECK,XP(f)
- Vars
- K(b);P-FLIGHT,P_SPINS(a)::QAR1(A),XS(a)
- Refutation
- K(b);P_SPINS(a),S_FLIGHT,XP(H)
- Try
- B(K);
- Vars
- K(b);P-FLIGHT,P_SPINS(a)::R(C)
- S(d);::QAB(A)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- Refutation
- S(a);XR(C)
- Try
- R(C);
- Vars
- K(b);P-FLIGHT,P_SPINS(a)::R(C)
- S(a);N_GUARD::R1(C),XS(a)
- S(d);::QAR2(A)
- Refutation
- S(d);
- Try
- R(C);
- Vars
- S(d);N_GUARD::QAB1(A),XS(a)
- Refutation
- P(c);XR(C)
- Try
- R(C);
- Vars
- K(b);P-FLIGHT,P_SPINS(a)::R(C)
- S(a);N_GUARD,XP(B)::R1(C)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- Refutation
- P(f);XR(C)
- Try
- R(C);
- Vars
- K(b);P-FLIGHT,P_SPINS(a)::R(C)
- S(d);::QAB(A)
- S(a);N_GUARD::R1(C),XS(a)
- S(a);N_GUARD::R1(C)
- Refutation
- P(h);XR(C)
- Try
- Q(A);P_PINS(a)
- Threat
- R1(C)
- Vars
- S(d);::QAB(A)
- Refutation
- K(b);N_SPINS(a),P-FLIGHT,P_SPINS(d)
- Try
- Q(A);
- Threat
- QAR1(A)
- Vars
- K(b);P-FLIGHT,P_SPINS(a)::R(C)
- Refutation
- S(d);
- Try
- Q(A);CHECK,XS(a)
- Vars
- S(d);SBLOCK,XQ(A)::R(C)
- Refutation
- K(b);S_FLIGHT,XQ(A)
- Try
- P(B);
- Vars
- S(a);XR(C)::B(K),XP(f)
- S(d);::QAB(A)
- S(a);N_GUARD::R1(C),XS(a)
- Refutation
- K(b);P-FLIGHT,P_SPINS(a)
- Try
- P(B);
- Vars
- S(a);XR(C)::B(K),XP(f)
- S(d);::QAB(A)
- S(a);N_GUARD::R1(C),XS(a)
- Refutation
- K(b);P-FLIGHT,P_SPINS(a)
- Try
- Actual
- R(C);
- Vars
- K(b);P-FLIGHT,P_SPINS(a)::QAR(A),XP(c)
- S(d);::QAB(A)
- S(a);OGATE::R1(C)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).