MESON Chess Problem Database
Problem Display
PID: 183431 (4R3/2p1n3/K1Q2Nq1/2p1b1pp/n1P5/2P1k2r/b2N1RP1/3r1BB1 w - - 0 1)
Kipping, Cyril Stanley
The Problemist, 1943
#2
11 + 12
SOLUTION
- SOUND
- Sets
- 1...Qe4
- 2.Qxe4#
- 1...Qf7
- 2.Qe4#
- 1...Qxe8
- 2.Qe4#
- 1...Qh6
- 2.Qe4#
- 1...Qg7
- 2.Qe4#
- 1...Qg8
- 2.Qe4#
- 1...Rxd2
- 2.Rf3#
- 1...Rh1
- 2.Qf3#
- 1...Rh2
- 2.Qf3#
- 1...Rf3
- 2.Qxf3#
- 1...Rh4
- 2.Qf3#
- 1...Bxc4+
- 2.Sxc4#
- 1...Bh2
- 2.Sd5#
- 1...Bg3
- 2.Sd5#
- 2.Qf3#
- 1...Bd4
- 2.Sd5#
- 1...Bf4
- 2.Sd5#
- 1...Bd6
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sf5
- 2.Sd5#
- 2.Rxe5#
- 2.Qe4#
- 1...Sxc6
- 2.Sd5#
- 1...Sc8
- 2.Sd5#
- 1...Sg8
- 2.Sd5#
- 1...h4
- 2.Sg4#
- 1...Qe4
- Tries
- 1.Qxc5+?
- 1...Bd4
- 2.Qxd4#
- 1...Sxc5+!
- 1...Bd4
- 1.Qd6?
- threat
- 2.Rf3#
- 2.Rf5#
- 1...Bxc4+
- 2.Sxc4#
- 1...Rxf1
- 2.Sxf1#
- 1...Rxd2
- 2.Rf3#
- 2.Qxd2#
- 1...Bxd6
- 2.Sd5#
- 1...Rf3
- 2.Rxf3#
- 1...Bd4
- 2.Sd5#
- 1...Qd3
- 2.Qxd3#
- 1...Qf5
- 2.Rf3#
- 2.Rxf5#
- 1...Rh1
- 2.Rf3#
- 1...Bh2
- 2.Sd5#
- 2.Re2#
- 2.Rf3#
- 1...Bg3
- 2.Sd5#
- 2.Re2#
- 2.Rf3#
- 1...Bf4
- 2.Sd5#
- 2.Re2#
- 2.Rf3#
- 2.Rxf4#
- 1...Sd5
- 2.Sxd5#
- 1...Sf5
- 2.Sd5#
- 2.Rf3#
- 2.Rxf5#
- 2.Rxe5#
- 2.Qxe5#
- 2.Qd3#
- 1...cxd6!
- threat
- 1.Qxc5+?
- Keys
- 1.Qd7!
- threat
- 2.Rf3#
- 2.Rf5#
- 1...Qxf6+
- 2.Rxf6#
- 1...Bxc4+
- 2.Sxc4#
- 1...Rxf1
- 2.Sxf1#
- 1...Rxd2
- 2.Rf3#
- 2.Qxd2#
- 1...Rf3
- 2.Rxf3#
- 1...Bd4
- 2.Qxh3#
- 1...Qd3
- 2.Qxd3#
- 1...Qf5
- 2.Rf3#
- 2.Rxf5#
- 1...Rh1
- 2.Rf3#
- 1...Bh2
- 2.Rf3#
- 1...Bg3
- 2.Rf3#
- 1...Bf4
- 2.Re2#
- 2.Rf3#
- 1...Bd6
- 2.Sd5#
- 1...Sd5
- 2.Qxh3#
- 1...Sf5
- 2.Rf3#
- 2.Rxf5#
- 2.Rxe5#
- 2.Qd3#
- threat
- 1.Qd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 4
- REMOVED MATES = 14
- Sets
- Q(j);N_GUARD::QAR1(I),XQ(j)
- Q(j);N_GUARD::QAR1(I)
- Q(j);N_GUARD,XR(K)::QAR1(I)
- R(a);SBLOCK,XS(C)::B(B)+R(D),DCHECK
- R(d);N_GUARD::QAR1(I)
- R(d);N_GUARD::QAR1(I),XR(d)
- B(b);CHECK,XP(G)::S(C),XB(b)
- B(g);P_SPINS(l)::S(J)
- S(l);N_GUARD,P_SPINB(g)::S(J),XS(l)
- S(l);N_GUARD,P_SPINB(g),XQ(I)::S(J)
- S(l);N_GUARD,P_SPINB(g)::S(J)
- P(i);N_GUARD::S(J)
- Tries
- Try
- Q(I);CHECK,P_SPINS(J),XP(f)
- Vars
- B(g);N_GUARD,P_SPINB(g),P_SPINS(l)::QAB1(I),XB(g)
- Refutation
- S(e);CHECK,XQ(I)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- B(b);CHECK,XP(G)::S(C),XB(b)
- R(a);XB(A)::S(C),XR(a)
- B(g);P_SPINS(l),XQ(I)::S(J)
- R(d);::B(B)+R(D),DCHECK,XR(d)
- B(g);P_SPINS(l)::S(J)
- Q(j);N_GUARD,P_PINP(G)::QAR1(I),XQ(j)
- R(d);::B(B)+R(D),DCHECK
- S(l);N_GUARD,P_SPINB(g)::S(J),XS(l)
- Refutation
- P(k);XQ(I)
- Try
- Actual
- Q(I);P_SPINS(J)
- Threat
- DUALS(2)
- Vars
- Q(j);CHECK,OGATE,XS(J)::B(B)+R(D),XQ(j)
- B(b);CHECK,XP(G)::S(C),XB(b)
- R(a);XB(A)::S(C),XR(a)
- R(d);::B(B)+R(D),DCHECK,XR(d)
- B(g);N_GUARD,P_SPINS(l)::QAR(I),XR(d)
- Q(j);N_GUARD,N_PINS(J),P_PINP(G)::QAR1(I),XQ(j)
- R(d);::B(B)+R(D),DCHECK
- B(g);P_SPINS(l)::B(B)+R(D),DCHECK
- B(g);N_PINS(J),P_SPINS(l)::S(J)
- S(l);P_SPINB(g)::QAR(I),XR(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).