MESON Chess Problem Database
Problem Display
PID: 69645 (n3N1K1/1b4p1/4kpN1/3R4/4r3/3n4/3R2B1/Q7 w - - 0 1)
McKim, JB
3rd Prize, Centennial Ty., 0000
#2
7 + 7
| 285 | The Chess Player's Chronicle (Staunton) | 1877 |
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.Sxg7#
- 1...Re2
- 2.Sxg7#
- 1...Re3
- 2.Sxg7#
- 1...Ra4
- 2.Sxg7#
- 1...Rb4
- 2.Sxg7#
- 1...Rc4
- 2.Sxg7#
- 1...Rd4
- 2.Sxg7#
- 1...Rf4
- 2.Sxg7#
- 1...Rg4
- 2.Sxg7#
- 1...Rh4
- 2.Sxg7#
- 1...Re5
- 2.Sxg7#
- 1...Sc1
- 2.Sxg7#
- 1...Se1
- 2.Sxg7#
- 1...Sb2
- 2.Sxg7#
- 1...Sf2
- 2.Sxg7#
- 1...Sb4
- 2.Sxg7#
- 1...Sf4
- 2.Sxg7#
- 1...Sc5
- 2.Sxg7#
- 1...Se5
- 2.Sxg7#
- 1...Sb6
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...f5
- 2.Rd6#
- 1...Re1
- Tries
- 1.Qe5+?
- 1...Rxe5
- 2.Sxg7#
- 1...Sxe5
- 2.Sxg7#
- 1...fxe5!
- 1...Rxe5
- 1.Qc1?
- 1...Bxd5
- 2.Qc8#
- 1...Sxc1
- 2.Sxg7#
- 1...Re1
- 2.Sxg7#
- 1...Re2
- 2.Sxg7#
- 1...Re3
- 2.Sxg7#
- 1...Ra4
- 2.Sxg7#
- 1...Rb4
- 2.Sxg7#
- 1...Rc4
- 2.Sxg7#
- 1...Rd4
- 2.Sxg7#
- 1...Rf4
- 2.Sxg7#
- 1...Rg4
- 2.Sxg7#
- 1...Rh4
- 2.Sxg7#
- 1...Re5
- 2.Sxg7#
- 1...Ba6
- 2.Qc6#
- 1...Bc6
- 2.Qxc6#
- 1...Bc8
- 2.Qc6#
- 1...Se1
- 2.Sxg7#
- 1...Sb2
- 2.Sxg7#
- 1...Sf2
- 2.Sxg7#
- 1...Sb4
- 2.Sxg7#
- 1...Sf4
- 2.Sxg7#
- 1...Sc5
- 2.Sxg7#
- 1...Se5
- 2.Sxg7#
- 1...Sb6
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...f5
- 2.Rd6#
- 1...Kxd5!
- 1...Bxd5
- 1.Qa2?
- threat
- 2.Sxg7#
- 1...f5
- 2.Rd6#
- 1...Bxd5!
- threat
- 1.Qa5?
- threat
- 2.Sxg7#
- 2.Rd6#
- 1...Re5
- 2.Sxg7#
- 1...Se5
- 2.Sxg7#
- 1...Rd4
- 2.Sxg7#
- 1...Sc5
- 2.Sxg7#
- 1...f5
- 2.Rd6#
- 1...Bxd5!
- threat
- 1.Qxa8?
- threat
- 2.Sc7#
- 1...Bxd5
- 2.Qc8#
- 1...Rc4
- 2.Sxg7#
- 1...Re5
- 2.Sxg7#
- 1...Se5
- 2.Sxg7#
- 1...f5
- 2.Rd6#
- 1...Kxd5!
- threat
- 1.Qe5+?
- Keys
- 1.Qc3!
- 1...Kxd5
- 2.Sf4#
- 1...Bxd5
- 2.Qc8#
- 1...Re1
- 2.Sxg7#
- 1...Re2
- 2.Sxg7#
- 1...Re3
- 2.Sxg7#
- 1...Ra4
- 2.Sxg7#
- 1...Rb4
- 2.Sxg7#
- 1...Rc4
- 2.Sxg7#
- 1...Rd4
- 2.Sxg7#
- 1...Rf4
- 2.Sxg7#
- 1...Rg4
- 2.Sxg7#
- 1...Rh4
- 2.Sxg7#
- 1...Re5
- 2.Sxg7#
- 1...Ba6
- 2.Qc6#
- 1...Bc6
- 2.Qxc6#
- 1...Bc8
- 2.Qc6#
- 1...Sc1
- 2.Sxg7#
- 1...Se1
- 2.Sxg7#
- 1...Sb2
- 2.Sxg7#
- 1...Sf2
- 2.Sxg7#
- 1...Sb4
- 2.Sxg7#
- 1...Sf4
- 2.Sxg7#
- 1...Sc5
- 2.Sxg7#
- 1...Se5
- 2.Sxg7#
- 1...Sb6
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...f5
- 2.Rd6#
- 1...Kxd5
- 1.Qc3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- R(b);::S(F),XP(f)
- S(a);::S(F),XP(f)
- S(g);N_GUARD::S(F)
- S(g);N_GUARD::S(F),XS(g)
- P(d);SBLOCK::R1(D)
- Tries
- Try
- Q(A);CHECK
- Vars
- R(b);XQ(A)::S(F),XP(f)
- S(a);XQ(A)::S(F),XP(f)
- Refutation
- P(d);XQ(A)
- Try
- Q(A);
- Vars
- B(e);N_GUARD,SBLOCK,XR(D)::QAB(A)
- S(a);XQ(A)::S(F),XP(f)
- R(b);::S(F),XP(f)
- B(e);N_GUARD::QAR2(A)
- B(e);N_GUARD::QAR2(A),XB(e)
- S(a);::S(F),XP(f)
- S(g);N_GUARD::S(F)
- S(g);N_GUARD::S(F),XS(g)
- P(d);SBLOCK::R1(D)
- Refutation
- K(c);P_SPINR(b),P_SPINS(a),S_FLIGHT,XR(D)
- Try
- Q(A);
- Threat
- S(F),XP(f)
- Vars
- P(d);SBLOCK::QAB(A)+R(D),DCHECK
- Refutation
- B(e);P_SPINB(e),XR(D)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(b);::S(F),XP(f)
- S(a);::S(F),XP(f)
- P(d);::R1(D)
- Refutation
- B(e);XR(D)
- Try
- Q(A);XS(g)
- Threat
- S(F)
- Vars
- B(e);N_GUARD,SBLOCK,XR(D)::QAB(A)
- R(b);::S(F),XP(f)
- S(a);::S(F),XP(f)
- P(d);SBLOCK::R1(D)
- Refutation
- K(c);P_SPINB(e),P_SPINR(b),P_SPINS(a),S_FLIGHT,XR(D)
- Try
- Actual
- Q(A);
- Vars
- K(c);P_SPINR(b),P_SPINS(a),S_FLIGHT,XR(D)::S(E)
- B(e);N_GUARD,SBLOCK,XR(D)::QAB(A)
- R(b);::S(F),XP(f)
- B(e);N_GUARD::QAR2(A)
- B(e);N_GUARD::QAR2(A),XB(e)
- S(a);::S(F),XP(f)
- S(g);N_GUARD::S(F)
- S(g);N_GUARD::S(F),XS(g)
- P(d);SBLOCK::R1(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).