MESON Chess Problem Database
Problem Display
PID: 238117 (2N5/P1p2r2/Kp2p3/1B1N4/3PkpQn/2RpP3/b7/4R3 w - - 0 1)
Hermanson, Halvar
Schweizerische Arbeiter Schachzeitung, 1967
#2
10 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Kxd5
- 2.Bc6#
- 1...Rf6
- 2.Sxf6#
- 1...Rd7
- 2.Sf6#
- 1...Re7
- 2.Sf6#
- 1...Rg7
- 2.Sf6#
- 1...Rh7
- 2.Sf6#
- 1...Bxd5
- 2.Bxd3#
- 1...exd5
- 2.Bxd3#
- 1...Kxd5
- Tries
- 1.Sb4?
- threat
- 2.Bxd3#
- 1...Bb1
- 2.Bc6#
- 1...d2
- 2.Bd3#
- 1...Bc4!
- threat
- 1.Sxc7?
- threat
- 2.Sd6#
- 2.Bxd3#
- 1...Bc4
- 2.Sd6#
- 1...Rd7
- 2.Bxd3#
- 2.Qxf4#
- 1...Bb1
- 2.Sd6#
- 2.Bc6#
- 2.a8Q#
- 2.a8B#
- 1...Sf5
- 2.Bxd3#
- 2.Qxf4#
- 1...d2
- 2.Sd6#
- 2.Bd3#
- 1...Rxc7!
- threat
- 1.Ra3?
- threat
- 2.Sc3#
- 1...Bxd5
- 2.Bxd3#
- 1...exd5
- 2.Bxd3#
- 1...Kxd5!
- threat
- 1.Rb3?
- threat
- 2.Sc3#
- 1...exd5
- 2.Bxd3#
- 1...Kxd5!
- threat
- 1.Rxd3?
- threat
- 2.Sc3#
- 1...Kxd5
- 2.e4#
- 1...Bxd5
- 2.exf4#
- 1...exd5
- 2.exf4#
- 1...Bc4!
- threat
- 1.Rc4?
- threat
- 2.Sc3#
- 1...Kxd5
- 2.e4#
- 1...exd5
- 2.exf4#
- 1...d2!
- threat
- 1.Rc6?
- threat
- 2.Sc3#
- 1...Kxd5
- 2.Qxe6#
- 1...exd5
- 2.Re6#
- 1...Bxd5!
- threat
- 1.Qxf4+?
- 1...Kxd5
- 2.Bc6#
- 2.Qe5#
- 1...Rxf4!
- 1...Kxd5
- 1.a8Q?
- threat
- 2.Sf6#
- 2.Bxd3#
- 1...Bxd5
- 2.Bxd3#
- 1...exd5
- 2.Bxd3#
- 1...Bc4
- 2.Sf6#
- 1...Rf6
- 2.Sxf6#
- 2.Bxd3#
- 1...Bb1
- 2.Sf6#
- 2.Sxc7#
- 1...d2
- 2.Sf6#
- 2.Bd3#
- 1...c6!
- threat
- 1.a8B?
- threat
- 2.Sf6#
- 2.Bxd3#
- 1...Bxd5
- 2.Bxd3#
- 1...exd5
- 2.Bxd3#
- 1...Bc4
- 2.Sf6#
- 1...Rf6
- 2.Sxf6#
- 2.Bxd3#
- 1...Bb1
- 2.Sf6#
- 2.Sxc7#
- 1...d2
- 2.Sf6#
- 2.Bd3#
- 1...c6!
- threat
- 1.Sb4?
- Keys
- 1.Rxc7!
- threat
- 2.Sc3#
- 1...Kxd5
- 2.a8Q#
- 2.a8B#
- 1...Rxc7
- 2.Sf6#
- 1...Bxd5
- 2.Sd6#
- 1...exd5
- 2.Sd6#
- threat
- 1.Rxc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- K(c);N_SPINP(d),OGATEB,S_FLIGHT,XS(G)::B(F)
- R(i);N_GUARD::S(G),XR(i)
- R(i);N_GUARD::S(G)
- B(a);SBLOCK,XS(G)::B(F),XP(b)
- P(g);SBLOCK,XS(G)::B(F),XP(b)
- Tries
- Try
- S(G);
- Threat
- B(F),XP(b)
- Vars
- B(a);N_GUARD::B(F)
- P(b);::B(F)
- Refutation
- B(a);P_PINB(F)
- Try
- S(G);XP(h)
- Threat
- DUALS(2)
- Vars
- B(a);P_PINB(F)::S(J)
- Refutation
- R(i);XS(G)
- Try
- R(B);
- Threat
- S(G)
- Vars
- B(a);SBLOCK,XS(G)::B(F),XP(b)
- P(g);SBLOCK,XS(G)::B(F),XP(b)
- Refutation
- K(c);N_SPINP(d),S_FLIGHT,XS(G)
- Try
- R(B);
- Threat
- S(G)
- Vars
- P(g);SBLOCK,XS(G)::B(F),XP(b)
- Refutation
- K(c);N_SPINP(d),S_FLIGHT,XS(G)
- Try
- R(B);XP(b)
- Threat
- S(G)
- Vars
- K(c);N_SPINP(d),OGATE,S_FLIGHT,XS(G)::P(C)
- B(a);SBLOCK,XS(G)::R(A)+P(C),XP(d)
- P(g);SBLOCK,XS(G)::R(A)+P(C),XP(d)
- Refutation
- B(a);P_PINB(F)
- Try
- R(B);
- Threat
- S(G)
- Vars
- K(c);N_SPINP(d),OGATE,S_FLIGHT,XS(G)::P(C)
- P(g);SBLOCK,XS(G)::R(A)+P(C),XP(d)
- Refutation
- P(b);
- Try
- R(B);
- Threat
- S(G)
- Vars
- K(c);N_SPINP(d),S_FLIGHT,XS(G)::QAB1(E),XP(g)
- P(g);SBLOCK,XS(G)::R(B)
- Refutation
- B(a);XS(G)
- Try
- Q(E);CHECK,XP(d)
- Refutation
- R(i);XQ(E)
- Try
- P(I);
- Threat
- DUALS(2)
- Vars
- B(a);P_SPINB(a),XS(G)::B(F),XP(b)
- P(g);XS(G)::B(F),XP(b)
- B(a);P_PINB(F)::QAB(I)+S(G),DCHECK
- Refutation
- P(h);
- Try
- P(I);
- Threat
- DUALS(2)
- Vars
- B(a);P_SPINB(a),XS(G)::B(F),XP(b)
- P(g);XS(G)::B(F),XP(b)
- B(a);P_PINB(F)::B(I)+S(G),DCHECK
- Refutation
- P(h);
- Try
- Actual
- R(B);XP(h)
- Threat
- S(G)
- Vars
- K(c);N_SPINP(d),S_FLIGHT,XS(G)::P=Q
- R(i);N_GUARD,XR(B)::S(G)
- B(a);SBLOCK,XS(G)::S(J)
- P(g);SBLOCK,XS(G)::S(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).