MESON Chess Problem Database
Problem Display
PID: 106109 (8/3R1P2/2QNb3/2p4K/2Pk2pR/1P1p4/3B4/4r3 w - - 0 1)
Brock, David Thurston
Checkmate, 1902
#2
9 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qe4#
- 1...Rb1
- 2.Qe4#
- 1...Rc1
- 2.Qe4#
- 1...Rd1
- 2.Qe4#
- 1...Rf1
- 2.Qe4#
- 1...Rg1
- 2.Qe4#
- 1...Rh1
- 2.Qe4#
- 1...Re4
- 2.Qxe4#
- 1...Re5+
- 2.Sf5#
- 1...Bxc4
- 2.Sxc4#
- 1...Bd5
- 2.Qxd5#
- 1...Bf5
- 2.Qd5#
- 1...Bxd7
- 2.Qd5#
- 1...Bxf7+
- 2.Sxf7#
- 1...Ra1
- Tries
- 1.Se4+?
- 1...Bd5
- 2.Qxd5#
- 1...Bxd7
- 2.Qd5#
- 1...Ke5!
- 1...Bd5
- 1.Sb7+?
- 1...Bd5
- 2.Qxd5#
- 1...Bxd7
- 2.Qd5#
- 1...Ke5!
- 1...Bd5
- 1.Sc8+?
- 1...Bd5
- 2.Qxd5#
- 1...Bxd7
- 2.Qd5#
- 1...Ke5!
- 1...Bd5
- 1.Se8+?
- 1...Bd5
- 2.Qxd5#
- 1...Bxd7
- 2.Qd5#
- 1...Ke5!
- 1...Bd5
- 1.Rxg4+?
- 1...Ke5
- 2.Bc3#
- 1...Re4
- 2.Rxe4#
- 2.Qxe4#
- 1...Bxg4+!
- 1...Ke5
- 1.Qf3?
- 1...Re5+
- 2.Sf5#
- 1...Bxf7+
- 2.Sxf7#
- 1...Ke5
- 2.Bc3#
- 2.Qf4#
- 1...Bxc4
- 2.Sxc4#
- 1...Bxd7
- 2.Qd5#
- 1...Ra1
- 2.Qe4#
- 2.Qe3#
- 2.Qf4#
- 2.Qf6#
- 1...Rb1
- 2.Qe4#
- 2.Qe3#
- 2.Qf4#
- 2.Qf6#
- 1...Rc1
- 2.Qe4#
- 2.Qe3#
- 2.Qf4#
- 2.Qf6#
- 1...Rd1
- 2.Qe4#
- 2.Qe3#
- 2.Qf4#
- 2.Qf6#
- 1...Rf1
- 2.Qe4#
- 2.Qe3#
- 1...Rg1
- 2.Qe4#
- 2.Qe3#
- 2.Qf4#
- 2.Qf6#
- 1...Rh1
- 2.Qe4#
- 2.Qe3#
- 2.Qf4#
- 2.Qf6#
- 1...Re3
- 2.Qxe3#
- 1...Re4
- 2.Qxe4#
- 1...Bd5
- 2.Qxd5#
- 1...Bf5
- 2.Qd5#
- 1...Re2!
- 1...Re5+
- 1.Se4+?
- Keys
- 1.Qa8!
- 1...Re5+
- 2.Sf5#
- 1...Bxf7+
- 2.Sxf7#
- 1...Ke5
- 2.Qh8#
- 1...Bxc4
- 2.Sxc4#
- 1...Bxd7
- 2.Qd5#
- 1...Re2
- 2.Qa1#
- 1...Ra1
- 2.Qe4#
- 2.Qxa1#
- 2.Qh8#
- 1...Rb1
- 2.Qe4#
- 2.Qh8#
- 1...Rc1
- 2.Qe4#
- 2.Qh8#
- 1...Rd1
- 2.Qe4#
- 2.Qh8#
- 1...Rf1
- 2.Qe4#
- 1...Rg1
- 2.Qe4#
- 2.Qh8#
- 1...Rh1
- 2.Qe4#
- 2.Qh8#
- 1...Re3
- 2.Qa1#
- 1...Re4
- 2.Qxe4#
- 2.Qa1#
- 1...Bd5
- 2.Qxd5#
- 1...Bf5
- 2.Qd5#
- 1...Re5+
- 1.Qa8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 7
- Sets
- R(a);N_GUARD::QAR1(F)
- R(a);N_GUARD,P_PINR(D)::QAR1(F)
- R(a);N_GUARD,N_SPINP(d)::QAR1(F),XR(a)
- R(a);CHECK,SBLOCK::R(H)+S(G),DCHECK
- B(f);XP(C)::R(H)+S(G),XB(f)
- B(f);N_GUARD::QAR1(F),XB(f)
- B(f);N_GUARD::QAR1(F)
- B(f);N_GUARD,XR(H)::QAR1(F)
- B(f);CHECK,XP(I)::R(H)+S(G),XB(f)
- Tries
- Try
- S(G);CHECK,N_PINP(d)
- Vars
- B(f);N_GUARD,P_SPINB(f)::QAR1(F),XB(f)
- B(f);N_GUARD,XR(H)::QAR1(F)
- Refutation
- K(c);S_FLIGHT
- Try
- S(G);CHECK
- Vars
- B(f);N_GUARD,P_SPINB(f)::QAR1(F),XB(f)
- B(f);N_GUARD,XR(H)::QAR1(F)
- Refutation
- K(c);N_SPINP(d),S_FLIGHT
- Try
- S(G);CHECK
- Vars
- B(f);N_GUARD,P_SPINB(f)::QAR1(F),XB(f)
- B(f);N_GUARD,XR(H)::QAR1(F)
- Refutation
- K(c);N_SPINP(d),S_FLIGHT
- Try
- S(G);CHECK
- Vars
- B(f);N_GUARD,P_SPINB(f)::QAR1(F),XB(f)
- B(f);N_GUARD,XR(H)::QAR1(F)
- Refutation
- K(c);N_SPINP(d),S_FLIGHT
- Try
- R(D);CHECK,XP(d)
- Vars
- K(c);S_FLIGHT::B(A)
- Refutation
- B(f);CHECK,XR(D)
- Try
- Q(F);
- Vars
- R(a);CHECK,SBLOCK::R(H)+S(G),DCHECK
- B(f);CHECK,XP(I)::R(H)+S(G),XB(f)
- B(f);XP(C)::R(H)+S(G),XB(f)
- B(f);N_GUARD,XR(H)::QAR1(F)
- R(a);N_GUARD::QAB1(F),XR(a)
- R(a);N_GUARD,N_SPINP(d)::QAR1(F),XR(a)
- B(f);N_GUARD::QAR1(F),XB(f)
- B(f);N_GUARD::QAR1(F)
- Refutation
- R(a);
- Try
- Actual
- Q(F);
- Vars
- R(a);CHECK,SBLOCK::R(H)+S(G),DCHECK
- B(f);CHECK,XP(I)::R(H)+S(G),XB(f)
- K(c);N_SPINP(d),S_FLIGHT::QAB(F)
- B(f);XP(C)::R(H)+S(G),XB(f)
- B(f);N_GUARD,XR(H)::QAR1(F)
- R(a);N_GUARD::QAB(F)
- R(a);N_GUARD::QAR1(F)
- B(f);N_GUARD::QAR1(F),XB(f)
- B(f);N_GUARD::QAR1(F)
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).