MESON Chess Problem Database
Problem Display
PID: 155366 (B7/1q3Q1b/r1R5/nN6/1N2kB1r/4pp1p/8/1K6 w - - 0 1)
Barnes, Barry Peter
The Problemist, 2014
#2
7 + 9
SOLUTION
- SOUND
- Sets
- 1...Qc8
- 2.Rc4#
- 2.Re6#
- 1...Qxb5
- 2.Rc4#
- 1...Qb6
- 2.Rc4#
- 2.Re6#
- 1...Qa7
- 2.Rc4#
- 2.Re6#
- 1...Qc7
- 2.Rc4#
- 2.Re6#
- 1...Qd7
- 2.Rc4#
- 2.Re6#
- 1...Qe7
- 2.Rc4#
- 2.Re6#
- 1...Qb8
- 2.Rc4#
- 2.Re6#
- 1...Rxf4
- 2.Qd5#
- 2.Qe6#
- 1...Ra7
- 2.Re6#
- 1...Rxa8
- 2.Re6#
- 1...Sc4
- 2.Rxc4#
- 1...Qc8
- Tries
- 1.Bh2?
- threat
- 2.Qd5#
- 2.Qe6#
- 1...Qxc6
- 2.Qe6#
- 1...Qxb5
- 2.Rc4#
- 1...Rxc6
- 2.Qd5#
- 1...Sxc6
- 2.Qd5#
- 1...e2
- 2.Qe6#
- 1...Qc8
- 2.Rc4#
- 2.Re6#
- 2.Qd5#
- 1...Qc7
- 2.Rc4#
- 2.Re6#
- 2.Qd5#
- 1...Qd7
- 2.Rc4#
- 2.Re6#
- 1...Qe7
- 2.Rc4#
- 2.Re6#
- 2.Qd5#
- 1...Qb8
- 2.Rc4#
- 2.Re6#
- 2.Qd5#
- 1...Rh5
- 2.Qf4#
- 1...Rh6
- 2.Qd5#
- 2.Qf4#
- 1...Bf5
- 2.Qd5#
- 1...Bg8
- 2.Qg6#
- 1...Sc4
- 2.Rxc4#
- 2.Qd5#
- 1...f2
- 2.Qd5#
- 1...Qxf7!
- threat
- 1.Bg3?
- threat
- 2.Qd5#
- 2.Qe6#
- 1...Qxc6
- 2.Qe6#
- 1...Qxb5
- 2.Rc4#
- 1...Rxc6
- 2.Qd5#
- 1...Sxc6
- 2.Qd5#
- 1...e2
- 2.Qe6#
- 1...Qc8
- 2.Rc4#
- 2.Re6#
- 2.Qd5#
- 1...Qc7
- 2.Rc4#
- 2.Re6#
- 2.Qd5#
- 1...Qd7
- 2.Rc4#
- 2.Re6#
- 1...Qe7
- 2.Rc4#
- 2.Re6#
- 2.Qd5#
- 1...Qb8
- 2.Rc4#
- 2.Re6#
- 2.Qd5#
- 1...Rh5
- 2.Qf4#
- 1...Rh6
- 2.Qd5#
- 2.Qf4#
- 1...Bf5
- 2.Qd5#
- 1...Bg8
- 2.Qg6#
- 1...Sc4
- 2.Rxc4#
- 2.Qd5#
- 1...f2
- 2.Qd5#
- 1...Qxf7!
- threat
- 1.Bd6?
- threat
- 2.Qd5#
- 2.Qe6#
- 1...Qxc6
- 2.Qe6#
- 1...Qxb5
- 2.Rc4#
- 1...Sxc6
- 2.Qd5#
- 1...e2
- 2.Qe6#
- 1...Qc8
- 2.Rc4#
- 2.Qd5#
- 1...Qd7
- 2.Rc4#
- 2.Qd5#
- 1...Qe7
- 2.Rc4#
- 2.Qd5#
- 1...Rh5
- 2.Qf4#
- 1...Rh6
- 2.Qd5#
- 2.Qf4#
- 1...Bf5
- 2.Qd5#
- 1...Bg8
- 2.Qg6#
- 1...Sc4
- 2.Rxc4#
- 2.Qd5#
- 1...f2
- 2.Qd5#
- 1...Qxf7!
- threat
- 1.Bb8?
- threat
- 2.Qd5#
- 2.Qe6#
- 1...Qxc6
- 2.Qe6#
- 1...Qxb5
- 2.Rc4#
- 1...Qxb8
- 2.Re6#
- 1...Rxc6
- 2.Qd5#
- 1...Sxc6
- 2.Qd5#
- 1...Qc7
- 2.Re6#
- 1...e2
- 2.Qe6#
- 1...Qc8
- 2.Rc4#
- 2.Re6#
- 2.Qd5#
- 1...Qd7
- 2.Rc4#
- 2.Re6#
- 1...Qe7
- 2.Rc4#
- 2.Re6#
- 2.Qd5#
- 1...Rh5
- 2.Qf4#
- 1...Rh6
- 2.Qd5#
- 2.Qf4#
- 1...Bf5
- 2.Qd5#
- 1...Bg8
- 2.Qg6#
- 1...Sc4
- 2.Rxc4#
- 2.Qd5#
- 1...f2
- 2.Qd5#
- 1...Qxf7!
- threat
- 1.Qg6+?
- 1...Kxf4
- 2.Sd3#
- 1...Bxg6!
- 1...Kxf4
- 1.Qf6?
- threat
- 2.Sc3#
- 2.Sd6#
- 2.Qe5#
- 1...Qxb5
- 2.Rc4#
- 2.Re6#
- 1...Rxf4
- 2.Sc3#
- 2.Sd6#
- 2.Qe6#
- 1...Rxc6
- 2.Qe5#
- 1...Sxc6
- 2.Sc3#
- 2.Sd6#
- 1...Bf5
- 2.Qd4#
- 2.Qe5#
- 1...Qc7
- 2.Sc3#
- 2.Rc4#
- 2.Re6#
- 1...Qd7
- 2.Sc3#
- 2.Rc4#
- 2.Re6#
- 2.Qe5#
- 1...Qe7
- 2.Sc3#
- 2.Rc4#
- 2.Re6#
- 1...Qg7
- 2.Sc3#
- 2.Sd6#
- 2.Rc4#
- 2.Re6#
- 1...Qb8
- 2.Sc3#
- 2.Rc4#
- 2.Re6#
- 1...Rh5
- 2.Sc3#
- 2.Sd6#
- 1...Sc4
- 2.Sc3#
- 2.Rxc4#
- 1...f2!
- threat
- 1.Bh2?
- Keys
- 1.Bc7!
- threat
- 2.Qd5#
- 2.Qe6#
- 1...Qxc6
- 2.Qe6#
- 1...Qxb5
- 2.Rc4#
- 1...Qxc7
- 2.Re6#
- 1...Rxc6
- 2.Qd5#
- 1...Sxc6
- 2.Qd5#
- 1...e2
- 2.Qe6#
- 1...Qc8
- 2.Rc4#
- 2.Re6#
- 2.Qd5#
- 1...Rh5
- 2.Qf4#
- 1...Rh6
- 2.Qd5#
- 2.Qf4#
- 1...Bf5
- 2.Qd5#
- 1...Bg8
- 2.Qg6#
- 1...Sc4
- 2.Rxc4#
- 2.Qd5#
- 1...f2
- 2.Qd5#
- threat
- 1.Bc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 3
- Sets
- Q(h);P_PINS(B),XS(D)::B(G)+R(E),DCHECK
- R(g);N_GUARD::R(E)
- R(g);N_GUARD,XB(G)::R(E)
- S(f);N_GUARD::R(E),XS(f)
- Tries
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- Q(h);P_SPINQ(h),XR(E)::QAR2(F)
- Q(h);P_PINS(B),XS(D)::B(G)+R(E),DCHECK
- R(g);XR(E)::QAB1(F)
- S(f);XR(E)::QAB1(F)
- P(a);::QAR2(F)
- R(e);N_GUARD::QAR1(F)
- B(i);::QAB1(F)
- B(i);N_GUARD::QAB(F)
- P(b);::QAB1(F)
- Refutation
- Q(h);XQ(F)
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- Q(h);P_SPINQ(h),XR(E)::QAR2(F)
- Q(h);P_PINS(B),XS(D)::B(G)+R(E),DCHECK
- R(g);XR(E)::QAB1(F)
- S(f);XR(E)::QAB1(F)
- P(a);::QAR2(F)
- R(e);N_GUARD::QAR1(F)
- B(i);::QAB1(F)
- B(i);N_GUARD::QAB(F)
- P(b);::QAB1(F)
- Refutation
- Q(h);XQ(F)
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- Q(h);P_SPINQ(h),XR(E)::QAR2(F)
- Q(h);P_PINS(B),XS(D)::B(G)+R(E),DCHECK
- S(f);XR(E)::QAB1(F)
- P(a);::QAR2(F)
- R(e);N_GUARD::QAR1(F)
- B(i);::QAB1(F)
- B(i);N_GUARD::QAB(F)
- P(b);::QAB1(F)
- Refutation
- Q(h);XQ(F)
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- Q(h);P_SPINQ(h),XR(E)::QAR2(F)
- Q(h);P_PINS(B),XS(D)::B(G)+R(E),DCHECK
- Q(h);XB(C)::B(G)+R(E),DCHECK
- R(g);XR(E)::QAB1(F)
- S(f);XR(E)::QAB1(F)
- Q(h);::B(G)+R(E),DCHECK
- P(a);::QAR2(F)
- R(e);N_GUARD::QAR1(F)
- B(i);::QAB1(F)
- B(i);N_GUARD::QAB(F)
- P(b);::QAB1(F)
- Refutation
- Q(h);XQ(F)
- Try
- Q(F);CHECK
- Vars
- K(d);P-FLIGHT,P_PINQ(F),XB(C)::S(B)
- Refutation
- B(i);XQ(F)
- Try
- Q(F);
- Threat
- DUALS(3)
- Vars
- R(g);XR(E)::QAR1(F)
- Refutation
- P(b);
- Try
- Actual
- B(C);
- Threat
- DUALS(2)
- Vars
- Q(h);P_SPINQ(h),XR(E)::QAR2(F)
- Q(h);P_PINS(B),XS(D)::B(G)+R(E),DCHECK
- Q(h);XB(C)::B(G)+R(E),DCHECK
- R(g);XR(E)::QAB1(F)
- S(f);XR(E)::QAB1(F)
- P(a);::QAR2(F)
- R(e);N_GUARD::QAR1(F)
- B(i);::QAB1(F)
- B(i);N_GUARD::QAB(F)
- P(b);::QAB1(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).