MESON Chess Problem Database
Problem Display
PID: 32653 (KQ4B1/3pB3/2pPqRp1/b2kN1Pb/1p1P1Rn1/8/2N5/8 w - - 0 1)
Morse, Christopher Jeremy
Correspondence Chess, 2000
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Qf7
- 2.Bxf7#
- 1...Qxg8
- 2.Qxg8#
- 1...Bb6
- 2.Sxb4#
- 1...Bc7
- 2.Sxb4#
- 1...Bd8
- 2.Sxb4#
- 1...Sf2
- 2.Se3#
- 1...Sh2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sxe5
- 2.Se3#
- 1...Sxf6
- 2.Se3#
- 1...Sh6
- 2.Se3#
- 1...b3
- 2.Qxb3#
- 1...c5
- 2.Qb7#
- 1...Qf7
- Tries
- 1.Ka7?
- 1...Qxg8
- 2.Qxg8#
- 1...Sxe5
- 2.Se3#
- 1...Sxf6
- 2.Se3#
- 1...Qf7
- 2.Bxf7#
- 1...Bc7
- 2.Sxb4#
- 1...Bd8
- 2.Sxb4#
- 1...Sf2
- 2.Se3#
- 1...Sh2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sh6
- 2.Se3#
- 1...b3
- 2.Qxb3#
- 1...c5
- 2.Qb7#
- 2.Qa8#
- 1...Bb6+!
- 1...Qxg8
- 1.Bf8?
- 1...Sxe5
- 2.Se3#
- 1...Sxf6
- 2.Se3#
- 1...Qf7
- 2.Bxf7#
- 1...Bb6
- 2.Sxb4#
- 1...Bc7
- 2.Sxb4#
- 1...Bd8
- 2.Sxb4#
- 1...Sf2
- 2.Se3#
- 1...Sh2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sh6
- 2.Se3#
- 1...b3
- 2.Qxb3#
- 1...c5
- 2.Qb7#
- 1...Qxg8!
- 1...Sxe5
- 1.Bf7?
- 1...Sxe5
- 2.Se3#
- 1...Sxf6
- 2.Se3#
- 1...Bb6
- 2.Sxb4#
- 1...Bc7
- 2.Sxb4#
- 1...Bd8
- 2.Sxb4#
- 1...Sf2
- 2.Se3#
- 1...Sh2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sh6
- 2.Se3#
- 1...b3
- 2.Qxb3#
- 1...c5
- 2.Qb7#
- 1...Qxf7!
- 1...Sxe5
- 1.R6f5?
- 1...Qxg8
- 2.Qxg8#
- 1...Sxe5
- 2.Se3#
- 1...Qf7
- 2.Bxf7#
- 1...Bb6
- 2.Sxb4#
- 1...Bc7
- 2.Sxb4#
- 1...Bd8
- 2.Sxb4#
- 1...Sf2
- 2.Se3#
- 1...Sh2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sf6
- 2.Se3#
- 1...Sh6
- 2.Se3#
- 1...b3
- 2.Qxb3#
- 1...c5
- 2.Qb7#
- 1...gxf5!
- 1...Qxg8
- 1.Rxe6?
- threat
- 2.Ref6#
- 2.Rxg6#
- 1...Sxe5
- 2.Se3#
- 2.Rxe5#
- 1...Sf6
- 2.Se3#
- 2.Rexf6#
- 1...Sh6
- 2.Se3#
- 1...dxe6!
- threat
- 1.Rxg6?
- 1...Qxg8
- 2.Qxg8#
- 1...Sxe5
- 2.Se3#
- 1...Qf7
- 2.Bxf7#
- 1...Bb6
- 2.Sxb4#
- 1...Bc7
- 2.Sxb4#
- 1...Bd8
- 2.Sxb4#
- 1...Sf2
- 2.Se3#
- 1...Sh2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sf6
- 2.Se3#
- 1...Sh6
- 2.Se3#
- 1...b3
- 2.Qxb3#
- 1...c5
- 2.Qb7#
- 1...Bxg6!
- 1...Qxg8
- 1.Rf8?
- 1...Sxe5
- 2.Se3#
- 1...Qf7
- 2.Bxf7#
- 1...Bb6
- 2.Sxb4#
- 1...Bc7
- 2.Sxb4#
- 1...Bd8
- 2.Sxb4#
- 1...Sf2
- 2.Se3#
- 1...Sh2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sf6
- 2.Se3#
- 1...Sh6
- 2.Se3#
- 1...b3
- 2.Qxb3#
- 1...c5
- 2.Qb7#
- 1...Qxg8!
- 1...Sxe5
- 1.Qa7?
- threat
- 2.Qc5#
- 1...Bb6
- 2.Sxb4#
- 1...c5
- 2.Qxc5#
- 2.Qb7#
- 1...Qxg8+!
- threat
- 1.Qxb4?
- threat
- 2.Qc5#
- 2.Qb3#
- 2.Qc4#
- 1...Bxb4
- 2.Sxb4#
- 1...Sxe5
- 2.Se3#
- 2.Qc5#
- 1...Bb6
- 2.Qb3#
- 2.Qc4#
- 1...Se3
- 2.Sxe3#
- 2.Qc5#
- 1...c5
- 2.Qxc5#
- 2.Qc4#
- 2.Qb7#
- 1...Qxg8+!
- threat
- 1.Qb5+?
- 1...c5
- 2.Qc4#
- 2.Qxc5#
- 2.Qb7#
- 1...cxb5!
- 1...c5
- 1.Qb6?
- threat
- 2.Qc5#
- 1...Bxb6
- 2.Sxb4#
- 1...c5
- 2.Qxc5#
- 2.Qb7#
- 1...Qxg8+!
- threat
- 1.Qb7?
- 1...Sxe5
- 2.Se3#
- 1...Sxf6
- 2.Se3#
- 1...b3
- 2.Qxb3#
- 1...Qf7
- 2.Bxf7#
- 1...Bb6
- 2.Sxb4#
- 1...Bc7
- 2.Sxb4#
- 1...Bd8
- 2.Sxb4#
- 1...Sf2
- 2.Se3#
- 1...Sh2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sh6
- 2.Se3#
- 1...Qxg8+!
- 1...Sxe5
- 1.Qc8?
- 1...Qxg8
- 2.Qxg8#
- 1...Sxe5
- 2.Se3#
- 1...Sxf6
- 2.Se3#
- 1...Qf7
- 2.Bxf7#
- 1...Bb6
- 2.Sxb4#
- 1...Bc7
- 2.Sxb4#
- 1...Bd8
- 2.Sxb4#
- 1...Sf2
- 2.Se3#
- 1...Sh2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sh6
- 2.Se3#
- 1...c5
- 2.Qb7#
- 2.Qxc5#
- 1...b3!
- 1...Qxg8
- 1.Ka7?
- Keys
- 1.Rf7!
- 1...Qxf7
- 2.Bxf7#
- 1...Qxe5
- 2.R7f5#
- 1...Qxd6
- 2.Qxd6#
- 1...Qxe7
- 2.Rxe7#
- 1...Sxe5
- 2.Se3#
- 1...Qf5
- 2.R7xf5#
- 1...Qf6
- 2.R7xf6#
- 1...Bb6
- 2.Sxb4#
- 1...Bc7
- 2.Sxb4#
- 1...Bd8
- 2.Sxb4#
- 1...Sf2
- 2.Se3#
- 1...Sh2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sf6
- 2.Se3#
- 1...Sh6
- 2.Se3#
- 1...b3
- 2.Qxb3#
- 1...c5
- 2.Qb7#
- 1...Qxf7
- 1.Rf7!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- Q(g);OGATEB::B(K),XQ(g)
- Q(g);N_SPINQ(g),OGATE,P_PINQ(J),XB(K)::QAB(J),XQ(g)
- B(c);N_GUARD::S(A),XP(a)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- S(b);N_GUARD,XS(D)::S(A)
- S(b);N_GUARD,XR(G)::S(A)
- P(a);OGATE::QAB(J),XP(a)
- P(f);OGATEB::QAB(J)
- Tries
- Try
- K(I);P-FLIGHT
- Vars
- Q(g);N_SPINQ(g),OGATE,XB(K)::QAB(J),XQ(g)
- S(b);N_GUARD,XS(D)::S(A)
- S(b);N_GUARD,XR(G)::S(A)
- Q(g);OGATEB::B(K),XQ(g)
- B(c);N_GUARD::S(A),XP(a)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- P(a);OGATE::QAB(J),XP(a)
- Refutation
- B(c);CHECK
- Try
- B(H);
- Vars
- S(b);N_GUARD,XS(D)::S(A)
- S(b);N_GUARD,XR(G)::S(A)
- Q(g);OGATEB::B(K),XQ(g)
- B(c);N_GUARD::S(A),XP(a)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- P(a);OGATE::QAB(J),XP(a)
- P(f);OGATEB::QAB(J)
- Refutation
- Q(g);N_SPINQ(g),XB(K)
- Try
- B(K);
- Vars
- S(b);N_GUARD,XS(D)::S(A)
- S(b);N_GUARD,XR(G)::S(A)
- B(c);N_GUARD::S(A),XP(a)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- P(a);OGATE::QAB(J),XP(a)
- P(f);OGATEB::QAB(J)
- Refutation
- Q(g);N_SPINQ(g),XB(K)
- Try
- R(G);
- Vars
- Q(g);N_SPINQ(g),OGATE,P_PINQ(J),XB(K)::QAB(J),XQ(g)
- S(b);N_GUARD,P_SPINS(b),XS(D)::S(A)
- Q(g);OGATEB::B(K),XQ(g)
- B(c);N_GUARD::S(A),XP(a)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- P(a);OGATE::QAB(J),XP(a)
- P(f);OGATEB::QAB(J)
- Refutation
- P(h);XR(G)
- Try
- R(G);XQ(g)
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD::S(A)
- Refutation
- P(i);P_SPINP(i),XR(G)
- Try
- R(G);XP(h)
- Vars
- Q(g);N_SPINQ(g),OGATE,P_PINQ(J),XB(K)::QAB(J),XQ(g)
- S(b);N_GUARD,XS(D)::S(A)
- Q(g);OGATEB::B(K),XQ(g)
- B(c);N_GUARD::S(A),XP(a)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- P(a);OGATE::QAB(J),XP(a)
- P(f);OGATEB::QAB(J)
- Refutation
- B(e);XR(G)
- Try
- R(G);
- Vars
- S(b);N_GUARD,XS(D)::S(A)
- Q(g);OGATEB::B(K),XQ(g)
- B(c);N_GUARD::S(A),XP(a)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- P(a);OGATE::QAB(J),XP(a)
- P(f);OGATEB::QAB(J)
- Refutation
- Q(g);N_SPINQ(g),XB(K)
- Try
- Q(J);
- Threat
- QAR1(J)
- Vars
- B(c);N_GUARD::S(A),XP(a)
- Refutation
- Q(g);CHECK,N_SPINQ(g),XB(K)
- Try
- Q(J);XP(a)
- Threat
- DUALS(3)
- Vars
- B(c);XQ(J)::S(A),XB(c)
- Refutation
- Q(g);CHECK,N_SPINQ(g),XB(K)
- Try
- Q(J);CHECK
- Refutation
- P(f);XQ(J)
- Try
- Q(J);
- Threat
- QAR1(J)
- Vars
- B(c);N_GUARD,XQ(J)::S(A),XP(a)
- Refutation
- Q(g);CHECK,N_SPINQ(g),XB(K)
- Try
- Q(J);P_PINP(f)
- Vars
- S(b);N_GUARD,XS(D)::S(A)
- S(b);N_GUARD,XR(G)::S(A)
- P(a);OGATE::QAB(J),XP(a)
- Q(g);OGATEB::B(K),XQ(g)
- B(c);N_GUARD::S(A),XP(a)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- Refutation
- Q(g);CHECK,N_SPINQ(g),XB(K)
- Try
- Q(J);
- Vars
- Q(g);N_SPINQ(g),OGATE,P_PINQ(J),XB(K)::QAB(J),XQ(g)
- S(b);N_GUARD,XS(D)::S(A)
- S(b);N_GUARD,XR(G)::S(A)
- Q(g);OGATEB::B(K),XQ(g)
- B(c);N_GUARD::S(A),XP(a)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- Refutation
- P(a);
- Try
- Actual
- R(G);N_PINQ(g)
- Vars
- Q(g);OGATE,P_SPINQ(g),XR(G)::B(K),XQ(g)
- Q(g);OGATEB,XS(D)::B(K)+R(G)
- Q(g);OGATE,XP(F)::QAR1(J),XQ(g)
- Q(g);OGATE,XB(H)::B(K)+R(G),XQ(g)
- S(b);N_GUARD,XS(D)::S(A)
- Q(g);OGATEB::B(K)+R(G),XQ(g)
- B(c);N_GUARD::S(A),XP(a)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- P(a);OGATE::QAB(J),XP(a)
- P(f);OGATEB::QAB(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).