MESON Chess Problem Database
Problem Display
PID: 28329 (3kr3/2R1rR2/5n2/B2p4/8/4Q3/K7/7b w - - 0 1)
Zepler, Erich Ernest
2nd HM., British Chess Magazine, 1945
#2
5 + 6
| 328 | Schweizerische Schachzeitung | 1972 |
| 3242 | BCPS Rapid Solving (Cheltenham) | 2001 |
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Rxe3
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc4#
- 2.Rc5#
- 2.Rc6#
- 1...Re4
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc4#
- 2.Rc5#
- 2.Rc6#
- 1...Re5
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc4#
- 2.Rc5#
- 2.Rc6#
- 1...Re6
- 2.Rc6#
- 1...Rf8
- 2.Qxe7#
- 1...Rg8
- 2.Qxe7#
- 1...Rh8
- 2.Qxe7#
- 1...Rxe3
- Tries
- 1.Rc6+?
- 1...Kd7
- 2.Qe6#
- 1...Rc7!
- 1...Kd7
- 1.Ra7+?
- 1...Rc7
- 2.Ra8#
- 1...Kc8!
- 1...Rc7
- 1.Rb7+?
- 1...Rc7
- 2.Rb8#
- 1...Kc8!
- 1...Rc7
- 1.Rfxe7?
- threat
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc4#
- 2.Rc5#
- 2.Rc6#
- 1...Rxe7
- 2.Qxe7#
- 1...Se4
- 2.Red7#
- 1...Sd7
- 2.Rexd7#
- 2.Rxe8#
- 1...Be4!
- threat
- 1.Qc5?
- threat
- 2.Rcxe7#
- 1...Rxc7
- 2.Qxc7#
- 1...Rxf7
- 2.Re7#
- 2.Rxf7#
- 1...Re1
- 2.Rc6#
- 2.Ra7#
- 2.Rb7#
- 2.Rcd7#
- 2.Rce7#
- 2.Rc8#
- 1...Re3
- 2.Rc6#
- 2.Ra7#
- 2.Rb7#
- 2.Rcd7#
- 2.Rce7#
- 2.Rc8#
- 1...Re4
- 2.Rc6#
- 2.Ra7#
- 2.Rb7#
- 2.Rcd7#
- 2.Rce7#
- 2.Rc8#
- 1...Re5
- 2.Rc6#
- 2.Ra7#
- 2.Rb7#
- 2.Rcd7#
- 2.Rce7#
- 2.Rc8#
- 1...Re6
- 2.Rc6#
- 2.Rcd7#
- 2.Rc8#
- 1...Rd7
- 2.Rcxd7#
- 2.Rc8#
- 1...Sd7
- 2.Rc8#
- 1...Re2+!
- threat
- 1.Qb6?
- threat
- 2.Qb8#
- 1...Re2+
- 2.Rc2#
- 1...Sd7!
- threat
- 1.Qa7?
- threat
- 2.Qb8#
- 2.Qa8#
- 1...Re2+
- 2.Rc2#
- 1...d4
- 2.Qb8#
- 1...Sd7!
- threat
- 1.Qb3?
- threat
- 2.Qb8#
- 1...Re2+
- 2.Rc2#
- 1...Sd7!
- threat
- 1.Qc3?
- threat
- 2.Rcxe7#
- 1...Rxc7
- 2.Qxc7#
- 1...Rxf7
- 2.Rxf7#
- 1...Re1
- 2.Rc4#
- 2.Rc5#
- 2.Rc6#
- 2.Ra7#
- 2.Rb7#
- 2.Rcd7#
- 2.Rce7#
- 2.Rc8#
- 1...Re3
- 2.Rc4#
- 2.Rc5#
- 2.Rc6#
- 2.Ra7#
- 2.Rb7#
- 2.Rcd7#
- 2.Rce7#
- 2.Rc8#
- 1...Re4
- 2.Rc4#
- 2.Rc5#
- 2.Rc6#
- 2.Ra7#
- 2.Rb7#
- 2.Rcd7#
- 2.Rce7#
- 2.Rc8#
- 1...Re5
- 2.Rc4#
- 2.Rc5#
- 2.Rc6#
- 2.Ra7#
- 2.Rb7#
- 2.Rcd7#
- 2.Rce7#
- 2.Rc8#
- 1...Re6
- 2.Rc6#
- 2.Rcd7#
- 2.Rc8#
- 1...Rd7
- 2.Rcxd7#
- 2.Rc8#
- 1...Sd7
- 2.Rc8#
- 1...Re2+!
- threat
- 1.Rc6+?
- Keys
- 1.Qc1!
- threat
- 2.Rcxe7#
- 1...Re2+
- 2.Rc2#
- 1...Rxc7
- 2.Qxc7#
- 1...Rxf7
- 2.Rxf7#
- 1...Re1
- 2.Rc2#
- 2.Rc3#
- 2.Rc4#
- 2.Rc5#
- 2.Rc6#
- 2.Ra7#
- 2.Rb7#
- 2.Rcd7#
- 2.Rce7#
- 2.Rc8#
- 1...Re3
- 2.Rc2#
- 2.Rc3#
- 2.Rc4#
- 2.Rc5#
- 2.Rc6#
- 2.Ra7#
- 2.Rb7#
- 2.Rcd7#
- 2.Rce7#
- 2.Rc8#
- 1...Re4
- 2.Rc2#
- 2.Rc3#
- 2.Rc4#
- 2.Rc5#
- 2.Rc6#
- 2.Ra7#
- 2.Rb7#
- 2.Rcd7#
- 2.Rce7#
- 2.Rc8#
- 1...Re5
- 2.Rc2#
- 2.Rc3#
- 2.Rc4#
- 2.Rc5#
- 2.Rc6#
- 2.Ra7#
- 2.Rb7#
- 2.Rcd7#
- 2.Rce7#
- 2.Rc8#
- 1...Re6
- 2.Rc6#
- 2.Rcd7#
- 2.Rc8#
- 1...Rd7
- 2.Rcxd7#
- 2.Rc8#
- 1...Sd7
- 2.Rc8#
- threat
- 1.Qc1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 4
- Sets
- R(d);N_GUARD::B(C)+R(D)
- R(f);N_GUARD::QAB1(B),XR(d)
- Tries
- Try
- R(D);CHECK
- Vars
- K(e);P-FLIGHT,P_SPINR(d)::QAB1(B)
- Refutation
- R(d);P_SPINR(d)
- Try
- R(D);CHECK
- Vars
- R(d);P_SPINR(d)::R(D)
- Refutation
- K(e);P-FLIGHT
- Try
- R(D);CHECK
- Vars
- R(d);P_SPINR(d)::R(D)
- Refutation
- K(e);P-FLIGHT
- Try
- R(E);XR(d)
- Threat
- DUALS(6)
- Vars
- R(f);OGATE,XR(E)::QAB1(B),XR(f)
- S(c);N_GUARD::R1(E)
- Refutation
- B(a);
- Try
- Q(B);
- Threat
- B(C)+R(D),XR(d)
- Vars
- R(d);OGATE,P_SPINR(d),XR(D)::QAB1(B),XR(d)
- S(c);SBLOCK::B(C)+R(D),DCHECK
- Refutation
- R(d);CHECK
- Try
- Q(B);
- Threat
- QAR2(B)
- Vars
- R(d);CHECK,N_GUARD::QAB(B)+R(D)
- Refutation
- S(c);
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- R(d);CHECK,N_GUARD::B(C)+R(D)
- P(b);::QAR2(B)
- Refutation
- S(c);
- Try
- Q(B);
- Threat
- QAR2(B)
- Vars
- R(d);CHECK,N_GUARD::B(C)+R(D)
- Refutation
- S(c);
- Try
- Q(B);
- Threat
- B(C)+R(D),XR(d)
- Vars
- R(d);OGATE,P_SPINR(d),XR(D)::QAB1(B),XR(d)
- R(d);OGATE,XR(E)::B(C)+R(D),XR(d)
- S(c);SBLOCK::B(C)+R(D),DCHECK
- Refutation
- R(d);CHECK
- Try
- Actual
- Q(B);
- Threat
- B(C)+R(D),XR(d)
- Vars
- R(d);CHECK,N_GUARD::B(C)+R(D)
- R(d);OGATE,P_SPINR(d),XR(D)::QAB1(B),XR(d)
- R(d);OGATE,XR(E)::B(C)+R(D),XR(d)
- S(c);SBLOCK::B(C)+R(D),DCHECK
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).