MESON Chess Problem Database
Problem Display
PID: 160835 (1nQ3b1/5p2/rB2R3/p2k4/3pp3/1q1p2NK/B1NR4/2n5 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Die Schwalbe, 1973
#2
8 + 11
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qc4
- 2.Bxc4#
- 2.Qxc4#
- 1...Se2
- 2.Bxb3#
- 1...Sc6
- 2.Qxc6#
- 1...Sd7
- 2.Qc6#
- 1...dxc2
- 2.Rxd4#
- 1...a4
- 2.Sb4#
- 1...fxe6
- 2.Qc5#
- 1...Qc4
- Tries
- 1.Sxd4?
- threat
- 2.Qc5#
- 1...Sc6
- 2.Qxc6#
- 1...Sd7
- 2.Qc6#
- 1...Rxb6!
- threat
- 1.Sxe4?
- threat
- 2.Sf6#
- 1...dxc2+
- 2.Sc3#
- 1...Sc6
- 2.Qxc6#
- 1...Sd7
- 2.Qc6#
- 1...f6
- 2.Sxf6#
- 1...fxe6!
- threat
- 1.Sf5?
- threat
- 2.Se7#
- 1...dxc2+
- 2.Se3#
- 1...fxe6
- 2.Qc5#
- 1...Sc6
- 2.Qxc6#
- 1...Sd7
- 2.Qc6#
- 1...Ra7!
- threat
- 1.Sh5?
- threat
- 2.Sf4#
- 2.Sf6#
- 1...fxe6
- 2.Qc5#
- 1...Sc6
- 2.Qxc6#
- 1...Sd7
- 2.Sf4#
- 2.Qc6#
- 1...Se2
- 2.Sf6#
- 2.Bxb3#
- 1...f6
- 2.Sf4#
- 2.Sxf6#
- 1...dxc2+!
- threat
- 1.Rf2?
- threat
- 2.Rf5#
- 1...fxe6
- 2.Qc5#
- 1...Sc6
- 2.Qxc6#
- 1...Sd7
- 2.Qc6#
- 1...f5
- 2.Rxf5#
- 1...Bh7!
- threat
- 1.Rxd3?
- threat
- 2.Se3#
- 2.Rxd4#
- 1...Sxd3
- 2.Bxb3#
- 1...fxe6
- 2.Qc5#
- 1...Sc6
- 2.Se3#
- 2.Qxc6#
- 1...Sd7
- 2.Qc6#
- 1...Se2
- 2.Se3#
- 2.Bxb3#
- 1...e3
- 2.Sxe3#
- 2.Rxd4#
- 1...exd3!
- threat
- 1.Re5+?
- 1...Kd6
- 2.Qc7#
- 1...Kxe5!
- 1...Kd6
- 1.Sxd4?
- Keys
- 1.Se2!
- threat
- 2.Sf4#
- 1...dxc2+
- 2.Sc3#
- 1...dxe2+
- 2.Se3#
- 1...Sxe2
- 2.Bxb3#
- 1...fxe6
- 2.Qc5#
- 1...Sc6
- 2.Qxc6#
- threat
- 1.Se2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- S(a);N_GUARD::B(A),XQ(b)
- S(j);N_GUARD::QAB1(H),XS(j)
- S(j);N_GUARD::QAB1(H)
- P(c);OGATE,P_PINS(D),P_SPINP(d),XS(B)::R1(C),XP(d)
- P(f);N_GUARD::S(B)
- P(i);SBLOCK,XR(G)::QAR1(H)
- Tries
- Try
- S(B);XP(d)
- Threat
- QAR1(H)
- Vars
- S(j);N_GUARD::QAB1(H),XS(j)
- S(j);N_GUARD::QAB1(H)
- Refutation
- R(h);XB(F)
- Try
- S(D);XP(e)
- Threat
- S(D)
- Vars
- P(c);CHECK,P_SPINP(d),XS(B)::S(D)
- S(j);N_GUARD::QAB1(H),XS(j)
- S(j);N_GUARD::QAB1(H)
- P(i);::S(D),XP(i)
- Refutation
- P(i);XR(G)
- Try
- S(D);
- Threat
- S(D)
- Vars
- P(c);CHECK,P_SPINP(d),XS(B)::S(D)
- P(i);SBLOCK,XR(G)::QAR1(H)
- S(j);N_GUARD::QAB1(H),XS(j)
- S(j);N_GUARD::QAB1(H)
- Refutation
- R(h);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- P(i);SBLOCK,XR(G)::QAR1(H)
- S(j);N_GUARD::QAB1(H),XS(j)
- Refutation
- P(c);CHECK,P_SPINP(d),XS(B)
- Try
- R(C);
- Threat
- R(C)
- Vars
- P(i);SBLOCK,XR(G)::QAR1(H)
- S(j);N_GUARD::QAB1(H),XS(j)
- S(j);N_GUARD::QAB1(H)
- P(i);::R(C),XP(i)
- Refutation
- B(k);
- Try
- R(C);P_PINP(d),XP(c)
- Threat
- DUALS(2)
- Vars
- S(a);N_GUARD,N_SPINP(d),XR(C)::B(A),XQ(b)
- P(i);SBLOCK,XR(G)::QAR1(H)
- S(j);N_GUARD::QAB1(H)
- Refutation
- P(e);N_SPINP(d),XR(C)
- Try
- R(G);CHECK
- Vars
- K(g);N_SPINQ(b),P-FLIGHT::QAB1(H)
- Refutation
- K(g);N_SPINQ(b),P-FLIGHT,XR(G)
- Try
- Actual
- S(D);
- Threat
- S(D)
- Vars
- P(c);CHECK,P_SPINP(d),XS(B)::S(D)
- P(c);CHECK,P_SPINP(d),XS(D)::S(B)
- S(a);N_GUARD,XS(D)::B(A),XQ(b)
- P(i);SBLOCK,XR(G)::QAR1(H)
- S(j);N_GUARD::QAB1(H),XS(j)
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).