MESON Chess Problem Database
Problem Display
PID: 264155 (8/1bQ4P/2p5/2Pp2K1/1r1k1N1R/P2p2p1/1Np2P1B/7B w - - 0 1)
Willemsens, Luis Cornelis
Tijdschrift vd KNSB, 1960
#2
11 + 8
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Tries
- 1.Qe5+?
- 1...Kxe5
- 2.h8Q#
- 2.h8B#
- 1...Kxc5!
- 1...Kxe5
- 1.Qd6?
- threat
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...Rxb2
- 2.Se2#
- 2.Sxd5#
- 1...gxf2
- 2.Sxd5#
- 1...gxh2
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...g2
- 2.Se2#
- 2.Sxd5#
- 1...c1S
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...c1R
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...Rb3
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...Ra4
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...Rc4
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...Rb5
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...Rb6
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...Ba6
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...Ba8
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...Bc8
- 2.Se2#
- 2.h8Q#
- 2.h8B#
- 1...d2
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...Kc3!
- threat
- 1.Qe7?
- threat
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...Rxb2
- 2.Se2#
- 2.Sxd5#
- 1...gxf2
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...gxh2
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...c1S
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...c1R
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...Rb3
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...Ra4
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...Rc4
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...Rb5
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...Rb6
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...Ba6
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...Ba8
- 2.Se2#
- 2.Sxd5#
- 2.h8Q#
- 2.h8B#
- 1...Bc8
- 2.Se2#
- 2.h8Q#
- 2.h8B#
- 1...d2
- 2.Se2#
- 2.Sxd5#
- 2.Qe3#
- 2.h8Q#
- 2.h8B#
- 1...g2
- 2.Se2#
- 2.h8Q#
- 2.h8B#
- 1...Kc3!
- threat
- 1.axb4?
- threat
- 2.Se2#
- 2.Sxd5#
- 2.Qg7#
- 2.h8Q#
- 2.h8B#
- 1...gxf2
- 2.Sxd5#
- 1...gxh2
- 2.Se2#
- 2.Sxd5#
- 2.Qg7#
- 2.h8Q#
- 2.h8B#
- 1...g2
- 2.Se2#
- 1...c1S
- 2.Se2#
- 2.Sxd5#
- 2.Qg7#
- 2.h8Q#
- 2.h8B#
- 1...c1R
- 2.Se2#
- 2.Sxd5#
- 2.Qg7#
- 2.h8Q#
- 2.h8B#
- 1...Ba6
- 2.Se2#
- 2.Sxd5#
- 2.Qg7#
- 2.h8Q#
- 2.h8B#
- 1...Ba8
- 2.Se2#
- 2.Sxd5#
- 2.Qg7#
- 2.h8Q#
- 2.h8B#
- 1...Bc8
- 2.Se2#
- 2.Qg7#
- 2.h8Q#
- 2.h8B#
- 1...d2
- 2.Se2#
- 2.Sxd5#
- 2.Qg7#
- 2.h8Q#
- 2.h8B#
- 1...Kc3!
- threat
- 1.Qe5+?
- Keys
- 1.Qa5!
- threat
- 2.h8Q#
- 2.h8B#
- 1...Kc3
- 2.Qxb4#
- 1...Ke5
- 2.h8Q#
- 2.h8B#
- 1...Rxb2
- 2.Sg6#
- 1...gxf2
- 2.Sxd5#
- 1...gxh2
- 2.h8Q#
- 2.h8B#
- 1...g2
- 2.Se2#
- 1...c1Q
- 2.h8Q#
- 2.h8B#
- 1...c1S
- 2.h8Q#
- 2.h8B#
- 1...c1B
- 2.h8Q#
- 2.h8B#
- 1...c1R
- 2.h8Q#
- 2.h8B#
- 1...Rb3
- 2.Sfxd3#
- 2.Sg6#
- 2.h8Q#
- 2.h8B#
- 1...Ra4
- 2.Sfxd3#
- 2.Sg6#
- 2.h8Q#
- 2.h8B#
- 1...Rc4
- 2.Sfxd3#
- 2.Sg6#
- 2.h8Q#
- 2.h8B#
- 1...Rb5
- 2.Sfxd3#
- 1...Rb6
- 2.Sfxd3#
- 2.Sg6#
- 2.h8Q#
- 2.h8B#
- 1...Ba6
- 2.h8Q#
- 2.h8B#
- 1...Ba8
- 2.h8Q#
- 2.h8B#
- 1...Bc8
- 2.h8Q#
- 2.h8B#
- 1...d2
- 2.h8Q#
- 2.h8B#
- threat
- 1.Qa5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- Tries
- Try
- Q(J);CHECK
- Vars
- K(e);N_GUARD,S_FLIGHT,XQ(J)::P=Q
- Refutation
- K(e);P_SPINP(f),S_FLIGHT,XP(H)
- Try
- Q(J);P_PINP(f)
- Threat
- DUALS(4)
- Vars
- P(c);XP(C)::R(G)+S(F),XP(f)
- Refutation
- K(e);N_SPINP(f),S_FLIGHT
- Try
- Q(J);
- Threat
- DUALS(4)
- Refutation
- K(e);S_FLIGHT
- Try
- P(E);XR(d)
- Threat
- DUALS(5)
- Vars
- P(c);XP(C)::R(G)+S(F),XP(f)
- P(c);::R(G)+S(F),DCHECK
- Refutation
- K(e);S_FLIGHT
- Try
- Actual
- Q(J);
- Threat
- P=Q
- Vars
- K(e);N_GUARD,P_SPINR(d),S_FLIGHT::QAB1(J),XR(d)
- K(e);S_FLIGHT::P=Q
- R(d);XS(B)::R(G)+S(F)
- P(c);XP(C)::R(G)+S(F),XP(f)
- P(c);XB(D)::P=Q
- P(c);::R(G)+S(F),DCHECK
- P(a);P_PINS(F)::P=Q
- P(a);::P=Q
- R(d);::R(G)+S(F),XP(b)
- B(h);::P=Q
- P(b);::P=Q
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).