MESON Chess Problem Database
Problem Display
PID: 138460 (1QB5/4N1R1/1p2b3/2pRPp2/5k2/3Pp3/KB4P1/8 w - - 0 1)
Quah, James
The Problemist, 1994
#2
10 + 6
| 14772 | Creative and Imaginative Chess Concepts | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Bxd5+
- 2.Sxd5#
- 1...Bd7
- 2.e6#
- 1...Bf7
- 2.e6#
- 1...Bxc8
- 2.e6#
- 1...Bg8
- 2.e6#
- 1...e2
- 2.Bc1#
- 1...c4
- 2.Rd4#
- 1...Bxd5+
- Tries
- 1.Ka1?
- 1...Bxd5
- 2.Sxd5#
- 2.e6#
- 1...Bxc8
- 2.e6#
- 1...e2
- 2.Bc1#
- 1...Bd7
- 2.e6#
- 1...Bf7
- 2.e6#
- 1...Bg8
- 2.e6#
- 1...c4
- 2.Rd4#
- 1...b5!
- 1...Bxd5
- 1.Kb1?
- 1...Bxd5
- 2.Sxd5#
- 2.e6#
- 1...Bxc8
- 2.e6#
- 1...e2
- 2.Bc1#
- 1...Bd7
- 2.e6#
- 1...Bf7
- 2.e6#
- 1...Bg8
- 2.e6#
- 1...c4
- 2.Rd4#
- 1...b5!
- 1...Bxd5
- 1.Ka3?
- 1...Bxd5
- 2.Sxd5#
- 2.e6#
- 1...Bxc8
- 2.e6#
- 1...e2
- 2.Bc1#
- 1...Bd7
- 2.e6#
- 1...Bf7
- 2.e6#
- 1...Bg8
- 2.e6#
- 1...c4
- 2.Rd4#
- 1...b5!
- 1...Bxd5
- 1.Bc1?
- 1...Bxd5+
- 2.Sxd5#
- 1...Bxc8
- 2.e6#
- 1...Bd7
- 2.e6#
- 1...Bf7
- 2.e6#
- 1...Bg8
- 2.e6#
- 1...c4
- 2.Rd4#
- 1...b5!
- 1...Bxd5+
- 1.Ba3?
- 1...Bxd5+
- 2.Sxd5#
- 1...Bxc8
- 2.e6#
- 1...e2
- 2.Bc1#
- 1...Bd7
- 2.e6#
- 1...Bf7
- 2.e6#
- 1...Bg8
- 2.e6#
- 1...c4
- 2.Rd4#
- 1...b5!
- 1...Bxd5+
- 1.Bc3?
- 1...Bxd5+
- 2.Sxd5#
- 1...Bxc8
- 2.e6#
- 1...e2
- 2.Bd2#
- 1...Bd7
- 2.e6#
- 1...Bf7
- 2.e6#
- 1...Bg8
- 2.e6#
- 1...c4
- 2.Rd4#
- 1...b5!
- 1...Bxd5+
- 1.Ba6?
- 1...Bxd5+
- 2.Sxd5#
- 1...e2
- 2.Bc1#
- 1...Bd7
- 2.e6#
- 1...Bf7
- 2.e6#
- 1...Bc8
- 2.e6#
- 1...Bg8
- 2.e6#
- 1...c4
- 2.Rd4#
- 1...b5!
- 1...Bxd5+
- 1.Bxe6?
- 1...e2
- 2.Bc1#
- 1...c4
- 2.Rd4#
- 1...b5!
- 1...e2
- 1.Bb7?
- 1...Bxd5+
- 2.Sxd5#
- 1...e2
- 2.Bc1#
- 1...Bd7
- 2.e6#
- 1...Bf7
- 2.e6#
- 1...Bc8
- 2.e6#
- 1...Bg8
- 2.e6#
- 1...c4
- 2.Rd4#
- 1...b5!
- 1...Bxd5+
- 1.Bd7?
- 1...Bxd5+
- 2.Sxd5#
- 1...Bxd7
- 2.e6#
- 1...e2
- 2.Bc1#
- 1...Bf7
- 2.e6#
- 1...Bg8
- 2.e6#
- 1...c4
- 2.Rd4#
- 1...b5!
- 1...Bxd5+
- 1.Rg6?
- 1...Bxd5+
- 2.Sxd5#
- 1...Bxc8
- 2.e6#
- 1...e2
- 2.Bc1#
- 1...Bd7
- 2.e6#
- 1...Bf7
- 2.e6#
- 1...Bg8
- 2.e6#
- 1...c4
- 2.Rd4#
- 1...b5!
- 1...Bxd5+
- 1.Qd6?
- 1...Bxd5+
- 2.Sxd5#
- 1...Bxc8
- 2.Qh6#
- 2.e6#
- 1...e2
- 2.Bc1#
- 1...Bd7
- 2.Qh6#
- 2.e6#
- 1...Bf7
- 2.Qh6#
- 2.e6#
- 1...Bg8
- 2.Qh6#
- 2.e6#
- 1...c4
- 2.Rd4#
- 1...b5!
- 1...Bxd5+
- 1.Qc7?
- 1...Bxd5+
- 2.Sxd5#
- 1...Bxc8
- 2.e6#
- 1...e2
- 2.Bc1#
- 1...Bd7
- 2.e6#
- 1...Bf7
- 2.e6#
- 1...Bg8
- 2.e6#
- 1...c4
- 2.Rd4#
- 2.Qxc4#
- 1...b5!
- 1...Bxd5+
- 1.Ka1?
- Keys
- 1.Qxb6!
- 1...Bxd5+
- 2.Sxd5#
- 1...Bxc8
- 2.Qh6#
- 1...e2
- 2.Bc1#
- 1...Bd7
- 2.Qh6#
- 1...Bf7
- 2.Qh6#
- 1...Bg8
- 2.Qh6#
- 1...c4
- 2.Qd4#
- 1...Bxd5+
- 1.Qxb6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 5
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(f);CHECK,XR(E)::S(G),XB(f)
- B(f);N_PINR(E),OGATE::QAB(I)+P(F)
- B(f);OGATE::QAB(I)+P(F)
- B(f);N_PINR(E),OGATE,XB(J)::QAB(I)+P(F)
- P(a);OGATEB::B(B)
- P(c);N_PINR(E)::R(E)
- Tries
- Try
- K(A);N_SPINR(E),P-FLIGHT
- Vars
- B(f);OGATE,XB(J)::QAB(I)+P(F)
- P(a);OGATEB::B(B)
- B(f);OGATE::QAB(I)+P(F)
- P(c);N_GUARD::R(E)
- Refutation
- P(e);
- Try
- K(A);N_SPINR(E),S_FLIGHT
- Vars
- B(f);OGATE,XB(J)::QAB(I)+P(F)
- P(a);OGATEB::B(B)
- B(f);OGATE::QAB(I)+P(F)
- P(c);N_GUARD::R(E)
- Refutation
- P(e);
- Try
- K(A);N_SPINR(E),P-FLIGHT
- Vars
- B(f);OGATE,XB(J)::QAB(I)+P(F)
- P(a);OGATEB::B(B)
- B(f);OGATE::QAB(I)+P(F)
- P(c);N_GUARD::R(E)
- Refutation
- P(e);
- Try
- B(B);P_PINP(a)
- Vars
- B(f);CHECK,XR(E)::S(G),XB(f)
- B(f);N_PINR(E),OGATE,XB(J)::QAB(I)+P(F)
- B(f);N_PINR(E),OGATE::QAB(I)+P(F)
- B(f);OGATE::QAB(I)+P(F)
- P(c);N_PINR(E)::R(E)
- Refutation
- P(e);
- Try
- B(B);
- Vars
- B(f);CHECK,XR(E)::S(G),XB(f)
- B(f);N_PINR(E),OGATE,XB(J)::QAB(I)+P(F)
- P(a);OGATEB::B(B)
- B(f);N_PINR(E),OGATE::QAB(I)+P(F)
- B(f);OGATE::QAB(I)+P(F)
- P(c);N_PINR(E)::R(E)
- Refutation
- P(e);
- Try
- B(B);
- Vars
- B(f);CHECK,XR(E)::S(G),XB(f)
- B(f);N_PINR(E),OGATE,XB(J)::QAB(I)+P(F)
- P(a);OGATEB::B(B)
- B(f);N_PINR(E),OGATE::QAB(I)+P(F)
- B(f);OGATE::QAB(I)+P(F)
- P(c);N_PINR(E)::R(E)
- Refutation
- P(e);
- Try
- B(J);
- Vars
- B(f);CHECK,XR(E)::S(G),XB(f)
- P(a);OGATEB::B(B)
- B(f);N_PINR(E),OGATE::QAB(I)+P(F)
- B(f);OGATE::QAB(I)+P(F)
- P(c);N_PINR(E)::R(E)
- Refutation
- P(e);
- Try
- B(J);N_SPINR(E),XB(f)
- Vars
- P(a);OGATEB::B(B)
- P(c);N_GUARD::R(E)
- Refutation
- P(e);
- Try
- B(J);
- Vars
- B(f);CHECK,XR(E)::S(G),XB(f)
- P(a);OGATEB::B(B)
- B(f);N_PINR(E),OGATE::QAB(I)+P(F)
- B(f);OGATE::QAB(I)+P(F)
- P(c);N_PINR(E)::R(E)
- Refutation
- P(e);
- Try
- B(J);
- Vars
- B(f);CHECK,XR(E)::S(G),XB(f)
- B(f);N_PINR(E),OGATE,XB(J)::QAB(I)+P(F)
- P(a);OGATEB::B(B)
- B(f);OGATE::QAB(I)+P(F)
- P(c);N_PINR(E)::R(E)
- Refutation
- P(e);
- Try
- R(H);
- Vars
- B(f);CHECK,XR(E)::S(G),XB(f)
- B(f);N_PINR(E),OGATE,XB(J)::QAB(I)+P(F)
- P(a);OGATEB::B(B)
- B(f);N_PINR(E),OGATE::QAB(I)+P(F)
- B(f);OGATE::QAB(I)+P(F)
- P(c);N_PINR(E)::R(E)
- Refutation
- P(e);
- Try
- Q(I);
- Vars
- B(f);CHECK,XR(E)::S(G),XB(f)
- P(a);OGATEB::B(B)
- P(c);N_PINR(E)::R(E)
- Refutation
- P(e);
- Try
- Q(I);
- Vars
- B(f);CHECK,XR(E)::S(G),XB(f)
- B(f);N_PINR(E),OGATE,XB(J)::QAB(I)+P(F)
- P(a);OGATEB::B(B)
- B(f);N_PINR(E),OGATE::QAB(I)+P(F)
- B(f);OGATE::QAB(I)+P(F)
- Refutation
- P(e);
- Try
- Actual
- Q(I);XP(e)
- Vars
- B(f);CHECK,XR(E)::S(G),XB(f)
- B(f);N_PINR(E),OGATE,XB(J)::QAB(I)
- P(a);OGATEB::B(B)
- B(f);N_PINR(E),OGATE::QAB(I)
- B(f);OGATE::QAB(I)
- P(c);N_PINR(E),OGATE::QAR2(I)
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).