MESON Chess Problem Database
Problem Display
PID: 180275 (4r3/2B5/6B1/r3RNpP/4Nkn1/3Pp2P/4P1K1/b1R5 w - - 0 1)
Lider, Valentin Viktorovich
Die Schwalbe, 1963
#2
11 + 7
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Sxe5
- 2.Rf1#
- 1...Sf6
- 2.Rf1#
- 1...Sh6
- 2.Rf1#
- 1...Sxe5
- Tries
- 1.Sc3?
- threat
- 2.Re4#
- 1...Raxe5
- 2.Sd5#
- 1...Sxe5
- 2.Rf1#
- 1...Rexe5!
- threat
- 1.Sf6?
- threat
- 2.Re4#
- 1...Raxe5
- 2.Sd5#
- 1...Bxe5
- 2.Rc4#
- 1...Sxe5
- 2.Rf1#
- 1...Rexe5!
- threat
- 1.Sd4?
- threat
- 2.Rf5#
- 1...Rexe5
- 2.Se6#
- 1...Sxe5
- 2.Rf1#
- 1...Raxe5!
- threat
- 1.Se7?
- threat
- 2.Rf5#
- 1...Rxe5
- 2.Sd5#
- 1...Sxe5
- 2.Rf1#
- 1...Bxe5!
- threat
- 1.Sc3?
- Keys
- 1.Sc5!
- threat
- 2.Re4#
- 1...Rxe5
- 2.Se6#
- 1...Bxe5
- 2.Rc4#
- 1...Sxe5
- 2.Rf1#
- threat
- 1.Sc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- S(d);N_GUARD,P_SPINS(d),XR(G)::R(A)
- S(d);N_GUARD::R(A)
- Tries
- Try
- S(F);
- Threat
- B(K)+R(G),DCHECK
- Vars
- R(e);N_GUARD,P_SPINR(e),XR(G)::S(F)
- S(d);N_GUARD,P_SPINS(d),XR(G)::R(A)
- Refutation
- R(g);P_SPINR(g),XR(G)
- Try
- S(F);
- Threat
- B(K)+R(G),DCHECK
- Vars
- R(e);N_GUARD,P_SPINR(e),XR(G)::S(F)
- B(a);N_GUARD,P_SPINB(a),XR(G)::R(A)
- S(d);N_GUARD,P_SPINS(d),XR(G)::R(A)
- Refutation
- R(g);P_SPINR(g),XR(G)
- Try
- S(H);
- Threat
- B(K)+R(G),DCHECK
- Vars
- R(g);N_GUARD,P_SPINR(g),XR(G)::S(H)
- S(d);N_GUARD,P_SPINS(d),XR(G)::R(A)
- Refutation
- R(e);P_SPINR(e),XR(G)
- Try
- S(H);
- Threat
- B(K)+R(G),DCHECK
- Vars
- R(e);N_GUARD,P_SPINR(e),XR(G)::S(H)
- S(d);N_GUARD,P_SPINS(d),XR(G)::R(A)
- Refutation
- B(a);P_SPINB(a),XR(G)
- Try
- Actual
- S(F);
- Threat
- B(K)+R(G),DCHECK
- Vars
- R(g);N_GUARD,P_SPINR(g),XR(G)::S(F)
- B(a);N_GUARD,P_SPINB(a),XR(G)::R(A)
- S(d);N_GUARD,P_SPINS(d),XR(G)::R(A)
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).