MESON Chess Problem Database
Problem Display
PID: 271594 (1K3N2/1bP2P2/p4rn1/3k3p/1B3p2/1NRB4/r2RQ3/4b2q w - - 0 1)
Kipping, Cyril Stanley
The Problemist, 1956
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Qe4
- 2.Qxe4#
- 1...Qf1
- 2.Qe4#
- 1...Qg1
- 2.Qe4#
- 1...Qh2
- 2.Qe4#
- 1...Qh3
- 2.Qe4#
- 1...Qh4
- 2.Qe4#
- 1...Rf5
- 2.Qe6#
- 1...Rc6
- 2.Bc4#
- 1...Rd6
- 2.Rc5#
- 1...Re6
- 2.Qxe6#
- 1...Rxf7
- 2.Qe6#
- 1...Bg3
- 2.Bc2#
- 1...Bh4
- 2.Bc2#
- 1...Bc6
- 2.Bc4#
- 1...Se5
- 2.Be4#
- 1...f3
- 2.Qe4#
- 1...Qe4
- Tries
- 1.Kxb7?
- threat
- 2.Bc4#
- 1...Qe4
- 2.Qxe4#
- 1...Rb6+!
- threat
- 1.Sxg6?
- threat
- 2.Se7#
- 2.Qe5#
- 1...Rxf7
- 2.Qe5#
- 1...Qe4
- 2.Qxe4#
- 1...Rf5
- 2.Se7#
- 1...Re6
- 2.Sxf4#
- 2.Be4#
- 1...Rxg6!
- threat
- 1.Bb5+?
- 1...Bxd2
- 2.Rd3#
- 1...Rxd2!
- 1...Bxd2
- 1.Qe7?
- threat
- 2.Be4#
- 2.Rc5#
- 2.Qc5#
- 1...Rxd2
- 2.Rc5#
- 2.Qc5#
- 1...Bxd2
- 2.Rc5#
- 2.Qc5#
- 1...Sxf8
- 2.Be4#
- 2.Rc5#
- 1...Re6
- 2.Rc5#
- 2.Qc5#
- 2.Qxe6#
- 1...Qe4
- 2.Bxe4#
- 2.Rc5#
- 2.Qc5#
- 2.Qxe4#
- 1...Qg1
- 2.Be4#
- 2.Qe4#
- 1...Rc2
- 2.Be4#
- 2.Qc5#
- 1...Ra5
- 2.Be4#
- 1...Rc6
- 2.Bc4#
- 2.Be4#
- 1...Rd6
- 2.Be4#
- 2.Rc5#
- 2.Qxd6#
- 1...Bf2
- 2.Be4#
- 1...Se5
- 2.Rc5#
- 2.Qc5#
- 1...Sxe7!
- threat
- 1.c8Q?
- threat
- 2.Bc4#
- 2.Qc4#
- 2.Qc5#
- 1...Qe4
- 2.Qxe4#
- 2.Qc5#
- 1...Qg1
- 2.Bc4#
- 2.Qe4#
- 2.Qc4#
- 1...Ra5
- 2.Bc4#
- 2.Qc4#
- 1...Rc6
- 2.Bc4#
- 1...Bf2
- 2.Bc4#
- 2.Qc4#
- 1...Bc6
- 2.Bc4#
- 1...Se5
- 2.Bc4#
- 2.Be4#
- 2.Qc5#
- 1...Bxc8!
- threat
- 1.c8R?
- threat
- 2.Bc4#
- 1...Qe4
- 2.Qxe4#
- 1...Bxc8!
- threat
- 1.Kxb7?
- Keys
- 1.Sd7!
- threat
- 2.Sxf6#
- 1...Rxf7
- 2.Sb6#
- 1...Qe4
- 2.Qxe4#
- 1...Se5
- 2.Qxe5#
- 1...Qh4
- 2.Qe4#
- 1...Rf5
- 2.Sb6#
- 1...Rb6
- 2.Sxb6#
- 1...Rc6
- 2.Bc4#
- 1...Rd6
- 2.Rc5#
- 1...Re6
- 2.Be4#
- 1...Bh4
- 2.Bc2#
- threat
- 1.Sd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- Q(b);N_GUARD::QAB1(B),XQ(b)
- Q(b);N_GUARD::QAB1(B)
- R(h);N_GUARD::QAB1(B)
- R(h);SBLOCK::R(A)+B(E),DCHECK
- R(h);SBLOCK::R1(D)
- R(h);N_GUARD::QAB1(B),XR(h)
- R(h);N_GUARD,XP(H)::QAB1(B)
- B(a);N_GUARD::R(A)+B(E)
- B(j);SBLOCK::R(A)+B(E),DCHECK
- S(i);SBLOCK::R(A)+B(E),DCHECK
- P(d);S_CUTQ(b)::QAB1(B)
- Tries
- Try
- K(I);P-FLIGHT,XB(j)
- Threat
- R(A)+B(E),DCHECK
- Vars
- Q(b);N_GUARD::QAB1(B),XQ(b)
- Refutation
- R(h);CHECK
- Try
- S(J);XS(i)
- Threat
- DUALS(2)
- Vars
- R(h);XP(H)::QAR1(B)
- Q(b);N_GUARD::QAB1(B),XQ(b)
- R(h);::S(J)
- Refutation
- R(h);XS(J)
- Try
- B(E);CHECK
- Vars
- B(a);XR(A)::R(D)
- Refutation
- R(c);XR(A)
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- R(c);::R(A)+B(E),DCHECK
- B(a);::R(A)+B(E),DCHECK
- Refutation
- S(i);XQ(B)
- Try
- P(G);
- Threat
- DUALS(3)
- Vars
- R(h);::R(A)+B(E),DCHECK
- B(j);::R(A)+B(E),DCHECK
- Refutation
- B(j);XQ(G)
- Try
- P(G);
- Threat
- R(A)+B(E),DCHECK
- Vars
- Q(b);N_GUARD::QAB1(B),XQ(b)
- Refutation
- B(j);XR(G)
- Try
- Actual
- S(J);
- Threat
- S(J),XR(h)
- Vars
- R(h);N_GUARD,XP(H)::S(J)
- Q(b);N_GUARD::QAB1(B),XQ(b)
- S(i);N_GUARD::QAR1(B),XS(i)
- Q(b);N_GUARD::QAB1(B)
- R(h);N_GUARD::S(J)
- R(h);N_GUARD::S(J),XR(h)
- R(h);SBLOCK::R(A)+B(E),DCHECK
- R(h);SBLOCK::R1(D)
- B(a);N_GUARD::R(A)+B(E)
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).