MESON Chess Problem Database
Problem Display
PID: 260786 (bKn5/2Qppp2/8/1NPkN1Rq/4Rnr1/5B2/1B6/3r2b1 w - - 0 1)
Johner, Hans
Neue Zurcher Zeitung, 1962
#2
9 + 11
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Ke6
- 2.Sc6#
- 1...Se6
- 2.Sc3#
- 2.Rd4#
- 2.Rf4#
- 2.Rexg4#
- 1...e6
- 2.Sc3#
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Rxf4#
- 1...Ke6
- Tries
- 1.Sd3+?
- 1...Qxg5
- 2.Sb4#
- 2.Sc3#
- 1...Rxg5
- 2.Sb4#
- 2.Sxf4#
- 2.Sc3#
- 1...f5
- 2.Sb4#
- 2.Sc3#
- 1...e5!
- 1...Qxg5
- 1.Sc4+?
- 1...Qxg5
- 2.Sc3#
- 1...Rxg5
- 2.Sc3#
- 1...f5
- 2.Sc3#
- 1...e5!
- 1...Qxg5
- 1.Sxg4+?
- 1...Qxg5
- 2.Sc3#
- 1...f5
- 2.Sc3#
- 1...e5!
- 1...Qxg5
- 1.Sc6+?
- 1...Qxg5
- 2.Sb4#
- 1...Rxg5
- 2.Sb4#
- 1...f5
- 2.Sb4#
- 1...e5!
- 1...Qxg5
- 1.Sg6+?
- 1...Qxg5
- 2.Sc3#
- 1...Rxg5
- 2.Sc3#
- 2.Sxf4#
- 1...f5
- 2.Sc3#
- 1...e5!
- 1...Qxg5
- 1.Sxd7+?
- 1...Qxg5
- 2.Sc3#
- 1...Rxg5
- 2.Sc3#
- 1...f5
- 2.Sc3#
- 1...e5!
- 1...Qxg5
- 1.Sxf7+?
- 1...Qxg5
- 2.Sc3#
- 1...Rxg5
- 2.Sc3#
- 1...e5!
- 1...Qxg5
- 1.Qb6?
- threat
- 2.Sc3#
- 2.Sc7#
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Rxf4#
- 1...Qxg5
- 2.Sc3#
- 2.Sc7#
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc4#
- 2.Rxf4#
- 1...Rxg5
- 2.Sc3#
- 2.Sc7#
- 1...Bc6
- 2.Sc7#
- 1...Sd6
- 2.Sc7#
- 1...d6
- 2.Sc7#
- 1...Qg6
- 2.Sc3#
- 2.Sc7#
- 2.Rd4#
- 1...Qh1
- 2.Sc3#
- 2.Sc7#
- 2.Rd4#
- 1...Qh3
- 2.Sc3#
- 2.Sc7#
- 2.Rd4#
- 1...Qh7
- 2.Sc3#
- 2.Sc7#
- 2.Rd4#
- 1...Rc1
- 2.Sc7#
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Rxf4#
- 1...Re1
- 2.Sc3#
- 2.Sc7#
- 2.Rxe1#
- 2.Re2#
- 2.Re3#
- 2.Rd4#
- 1...Rf1
- 2.Sc3#
- 2.Sc7#
- 2.Rd4#
- 1...Rd3
- 2.Sc7#
- 2.Re3#
- 2.Rd4#
- 1...Rd4
- 2.Sc3#
- 2.Sc7#
- 2.Rxd4#
- 1...Rg2
- 2.Sc3#
- 2.Sc7#
- 2.Rd4#
- 1...Rg3
- 2.Sc3#
- 2.Sc7#
- 2.Rd4#
- 1...Rh4
- 2.Sc3#
- 2.Sc7#
- 2.Rd4#
- 1...Be3
- 2.Sc3#
- 2.Sc7#
- 2.Rxe3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Rxf4#
- 1...Bd4
- 2.Sc7#
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Rxd4#
- 2.Rxf4#
- 1...Se2
- 2.Sc7#
- 2.Rd4#
- 2.Rf4#
- 2.Rexg4#
- 1...Sg2
- 2.Sc3#
- 2.Sc7#
- 2.Rd4#
- 2.Rf4#
- 2.Rexg4#
- 1...Sd3
- 2.Sc3#
- 2.Sc7#
- 2.Rd4#
- 2.Rf4#
- 2.Rexg4#
- 1...Sh3
- 2.Sc3#
- 2.Sc7#
- 2.Rd4#
- 2.Rf4#
- 2.Rexg4#
- 1...Se6
- 2.Sc3#
- 2.Rd4#
- 2.Rf4#
- 2.Rexg4#
- 1...Sg6
- 2.Sc3#
- 2.Sc7#
- 2.Rd4#
- 2.Rf4#
- 2.Rexg4#
- 1...f5
- 2.Sc3#
- 2.Sc7#
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc4#
- 2.Rxf4#
- 1...Sxb6!
- threat
- 1.Qb7+?
- 1...Kxc5
- 2.Sd3#
- 2.Sxd7#
- 2.Ba3#
- 2.Rc4#
- 1...Ke6
- 2.Sd3#
- 2.Sc4#
- 2.Sxg4#
- 2.Sc6#
- 2.Sg6#
- 2.Sxd7#
- 1...Bxb7!
- 1...Kxc5
- 1.Qxd7+?
- 1...Sd6
- 2.Rc4#
- 1...Kxc5!
- 1...Sd6
- 1.Sd3+?
- Keys
- 1.Qa5!
- threat
- 2.Sc7#
- 1...Kxc5
- 2.Rc4#
- 1...Ke6
- 2.Sc6#
- 1...Bxc5
- 2.Qa2#
- 1...Se6
- 2.Sc3#
- threat
- 1.Qa5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- K(e);S_CUTP(h),S_CUTP(i),S_CUTQ(f),S_CUTR(d),S_FLIGHT::R(C)+S(F)
- Tries
- Try
- S(F);CHECK
- Refutation
- P(h);P_SPINP(h)
- Try
- S(F);CHECK
- Vars
- Q(f);XR(G)::S(D)
- R(d);XR(G)::S(D)
- P(i);P_SPINP(i)::S(D)
- Refutation
- P(h);P_SPINP(h)
- Try
- S(F);CHECK,XR(d)
- Vars
- Q(f);XR(G)::S(D)
- P(i);P_SPINP(i)::S(D)
- Refutation
- P(h);P_SPINP(h)
- Try
- S(F);CHECK
- Vars
- Q(f);XR(G)::S(F)
- R(d);XR(G)::S(F)
- P(i);P_SPINP(i)::S(F)
- Refutation
- P(h);P_SPINP(h)
- Try
- S(F);CHECK
- Vars
- Q(f);XR(G)::S(D)
- P(i);P_SPINP(i)::S(D)
- Refutation
- P(h);P_SPINP(h)
- Try
- S(F);CHECK,XP(g)
- Vars
- Q(f);XR(G)::S(D)
- R(d);XR(G)::S(D)
- P(i);P_SPINP(i)::S(D)
- Refutation
- P(h);P_SPINP(h)
- Try
- S(F);CHECK,XP(i)
- Vars
- Q(f);XR(G)::S(D)
- R(d);XR(G)::S(D)
- Refutation
- P(h);P_SPINP(h)
- Try
- Q(H);
- Threat
- DUALS(10)
- Vars
- B(j);::S(D)
- S(k);::S(D)
- P(g);::S(D)
- Refutation
- S(k);XQ(H)
- Try
- Q(H);CHECK
- Refutation
- B(j);XQ(H)
- Try
- Q(H);CHECK,XP(g)
- Vars
- S(k);P_SPINS(k)::B(B)+R(C)
- Refutation
- K(e);P-FLIGHT,XP(E)
- Try
- Actual
- Q(H);
- Threat
- S(D)
- Vars
- K(e);N_GUARD,P-FLIGHT,XP(E)::R1(C)
- K(e);N_GUARD,S_CUTP(h),S_CUTP(i),S_CUTQ(f),S_CUTR(d),S_FLIGHT::R(C)+S(F)
- B(b);SBLOCK,XP(E)::QAB(H)
- S(c);SBLOCK::S(D)
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).