MESON Chess Problem Database
Problem Display
PID: 15257 (1qr5/1b2B3/1N2R3/3Qb3/2p1n3/R1P1k1P1/3p1nK1/1N3B2 w - - 0 1)
Quack, Godfrey C
The Problemist, 1981
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Rd8
- 2.Sxc4#
- 1...Re8
- 2.Sxc4#
- 1...Rf8
- 2.Sxc4#
- 1...Rg8
- 2.Sxc4#
- 1...Rh8
- 2.Sxc4#
- 1...Bxc3
- 2.Qxd2#
- 1...Bxg3
- 2.Qxd2#
- 1...Bd4
- 2.Qxd4#
- 1...Bf4
- 2.Qxd2#
- 2.Qd4#
- 1...Bd6
- 2.Qxd2#
- 2.Qd4#
- 1...Bf6
- 2.Qxd2#
- 1...Bc7
- 2.Sxc4#
- 2.Bc5#
- 2.Qxd2#
- 2.Qd4#
- 2.Qc5#
- 1...Bg7
- 2.Qxd2#
- 1...Bh8
- 2.Qxd2#
- 1...Bxd5
- 2.Sxd5#
- 1...Bc6
- 2.Sxc4#
- 1...Sxc3
- 2.Bg5#
- 1...Sxg3
- 2.Bg5#
- 1...Sc5
- 2.Sxc4#
- 2.Bg5#
- 1...Sg5
- 2.Bxg5#
- 1...Sd6
- 2.Bg5#
- 1...Rd8
- Tries
- 1.Bc5+?
- 1...Bd4
- 2.Sxc4#
- 2.Bxd4#
- 2.Qxd4#
- 1...Sxc5
- 2.Sxc4#
- 1...Rxc5!
- 1...Bd4
- 1.Bg5+?
- 1...Bf4
- 2.Qxd2#
- 2.Qd4#
- 1...Sxg5!
- 1...Bf4
- 1.Rxe5?
- threat
- 2.Bg5#
- 2.Qxd2#
- 2.Qd4#
- 1...Bxd5
- 2.Sxd5#
- 2.Bg5#
- 1...d1Q
- 2.Bg5#
- 1...d1S
- 2.Bg5#
- 2.Qd2#
- 2.Qd4#
- 1...d1B
- 2.Bg5#
- 2.Qd2#
- 2.Qd4#
- 1...d1R
- 2.Bg5#
- 1...Qd6
- 2.Bg5#
- 1...Rd8
- 2.Sxc4#
- 2.Bc5#
- 2.Bg5#
- 1...Rf8
- 2.Sxc4#
- 2.Bc5#
- 2.Qxd2#
- 2.Qd4#
- 2.Qc5#
- 1...Rg8
- 2.Sxc4#
- 2.Bc5#
- 2.Qxd2#
- 2.Qd4#
- 2.Qc5#
- 1...Sd3
- 2.Rxe4#
- 2.Qd4#
- 1...Sh3
- 2.Rxe4#
- 2.Qxd2#
- 2.Qd4#
- 1...Qxe5!
- threat
- 1.Qxe5?
- threat
- 2.Bg5#
- 2.Qd4#
- 1...d1Q
- 2.Bg5#
- 1...d1R
- 2.Bg5#
- 1...Qd6
- 2.Bg5#
- 1...Rd8
- 2.Sxc4#
- 2.Bg5#
- 1...Rf8
- 2.Sxc4#
- 2.Bc5#
- 2.Qd4#
- 2.Qc5#
- 1...Rg8
- 2.Sxc4#
- 2.Bc5#
- 2.Qd4#
- 2.Qc5#
- 1...Sd3
- 2.Qd4#
- 1...Sh3
- 2.Qd4#
- 1...Qxe5!
- threat
- 1.Bc5+?
- Keys
- 1.Qc6!
- threat
- 2.Sxc4#
- 2.Sd5#
- 1...Rxc6
- 2.Sd5#
- 1...Bxc3
- 2.Bc5#
- 1...Bxg3
- 2.Sd5#
- 1...Bxc6
- 2.Sxc4#
- 1...Sxc3
- 2.Bc5#
- 1...Sxg3
- 2.Bg5#
- 1...d1Q
- 2.Sxc4#
- 1...d1R
- 2.Sxc4#
- 1...Qd6
- 2.Sxc4#
- 1...Rd8
- 2.Sxc4#
- 1...Ba6
- 2.Sd5#
- 1...Sc5
- 2.Sxc4#
- 2.Bxc5#
- 2.Bg5#
- 1...Sg5
- 2.Sxc4#
- 2.Bc5#
- 2.Bxg5#
- 1...Sd6
- 2.Bg5#
- 1...Sf6
- 2.Sxc4#
- 2.Bc5#
- threat
- 1.Qc6!
This is a version of 188466
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 5
- REMOVED MATES = 10
- Sets
- R(i);N_GUARD::S(H),XP(d)
- R(i);N_GUARD,P_PINP(F)::S(H),XP(d)
- B(f);P_SPINB(f),P_SPINS(e),XP(E)::QAB1(G),XP(a)
- B(f);P_SPINS(e),XP(F)::QAB1(G),XP(a)
- B(f);N_GUARD,P_SPINS(e)::QAB1(G),XB(f)
- B(f);P_SPINS(e)::QAB1(G),XP(a)
- B(g);XQ(G)::S(H),XB(g)
- B(g);S_CUTR(i)::S(H),XP(d)
- S(e);N_GUARD,P_PINQ(G),P_SPINB(f),P_SPINS(e),XP(E)::B(J)
- S(e);N_GUARD,P_PINQ(G),P_SPINB(f),XP(F)::B(J)
- S(e);N_GUARD,P_PINQ(G),P_SPINB(f)::B(J),XS(e)
- S(e);N_GUARD,P_PINQ(G),P_SPINB(f)::B(J)
- Tries
- Try
- B(J);CHECK
- Vars
- S(e);P_PINQ(G),P_SPINB(f),XB(J)::S(H),XP(d)
- Refutation
- R(i);XB(J)
- Try
- B(J);CHECK
- Refutation
- S(e);P_PINQ(G),P_SPINB(f),XB(J)
- Try
- R(I);P_PINS(e),XB(f)
- Threat
- DUALS(3)
- Vars
- P(a);::B(J)
- Q(h);::B(J)
- Refutation
- Q(h);N_SPINS(e),XR(I)
- Try
- Q(G);P_PINS(e),XB(f)
- Threat
- DUALS(2)
- Vars
- P(a);::B(J)
- Q(h);::B(J)
- S(b);::QAB1(G)
- Refutation
- Q(h);N_SPINS(e),XQ(G)
- Try
- Actual
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(i);XQ(G)::S(H)
- B(f);N_GUARD,P_SPINB(f),P_SPINS(e),XP(E)::B(J)
- B(f);P_SPINS(e),XP(F)::S(H)
- B(g);XQ(G)::S(H),XP(d)
- S(e);N_GUARD,P_PINQ(G),P_SPINB(f),P_SPINS(e),XP(E)::B(J)
- S(e);N_GUARD,P_PINQ(G),P_SPINB(f),XP(F)::B(J)
- P(a);::S(H),XP(d)
- Q(h);::S(H),XP(d)
- R(i);::S(H),XP(d)
- B(g);::S(H)
- S(e);N_GUARD,P_PINQ(G),P_SPINB(f)::B(J)
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).