MESON Chess Problem Database
Problem Display
PID: 18323 (4NrQ1/5q2/4n2p/1PNkB2R/1P3P2/pP1r1P2/K1Pn4/1B1R4 w - - 0 1)
Whyatt, William Albert
The Times Weekly Edition, 1954
#2
14 + 8
SOLUTION
- SOUND
- Sets
- 1...Qxh5
- 2.Sc7#
- 2.Qxe6#
- 1...Qg6
- 2.Sc7#
- 1...Qxf4
- 2.Sc7#
- 2.Qxe6#
- 1...Qf5
- 2.Sc7#
- 1...Qf6
- 2.Sc7#
- 2.Bxf6#
- 1...Qa7
- 2.Bf6#
- 2.Qxe6#
- 1...Qb7
- 2.Bf6#
- 2.Qxe6#
- 1...Qc7
- 2.Sxc7#
- 2.Qxe6#
- 1...Qd7
- 2.Bf6#
- 1...Qe7
- 2.Bf6#
- 1...Qg7
- 2.Qxe6#
- 1...Qh7
- 2.Qxe6#
- 1...Re3
- 2.c4#
- 1...Rxf3
- 2.c4#
- 1...Sxb1
- 2.c4#
- 1...Sf1
- 2.c4#
- 1...Sxf3
- 2.c4#
- 1...Se4
- 2.c4#
- 2.fxe4#
- 1...Sd4
- 2.Sf6#
- 2.Sc7#
- 1...Sxf4
- 2.Sf6#
- 2.Sc7#
- 1...Sxc5
- 2.Sc7#
- 1...Sg5
- 2.Sf6#
- 2.Sc7#
- 1...Sc7
- 2.Sf6#
- 2.Sxc7#
- 2.Ba1#
- 2.Bb2#
- 2.Bc3#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Sg7
- 2.Sf6#
- 2.Sc7#
- 2.Bxg7#
- 1...Sd8
- 2.Sf6#
- 2.Sc7#
- 2.Ba1#
- 2.Bb2#
- 2.Bc3#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Qxh5
- Tries
- 1.Sc7+?
- 1...Qxc7
- 2.Qxe6#
- 1...Sxc7!
- 1...Qxc7
- 1.Ba1+?
- 1...Qxh5
- 2.Qxe6#
- 1...Qf5
- 2.Qxe6#
- 1...Sg5!
- 1...Qxh5
- 1.Bb2+?
- 1...Qxh5
- 2.Qxe6#
- 1...Qf5
- 2.Qxe6#
- 1...Sg5!
- 1...Qxh5
- 1.Bc3+?
- 1...Qxh5
- 2.Qxe6#
- 1...Qf5
- 2.Qxe6#
- 1...Sg5!
- 1...Qxh5
- 1.Bf6+?
- 1...Qxh5
- 2.Qxe6#
- 1...Sg5!
- 1...Qxh5
- 1.Bg7+?
- 1...Qxh5
- 2.Qxe6#
- 1...Qf5
- 2.Qxe6#
- 1...Sg5!
- 1...Qxh5
- 1.Bh8+?
- 1...Qxh5
- 2.Qxe6#
- 1...Qf5
- 2.Qxe6#
- 1...Sg5!
- 1...Qxh5
- 1.Rxd2?
- threat
- 2.c4#
- 1...Qxf4
- 2.Sc7#
- 2.Qxe6#
- 1...Sxc5
- 2.Sc7#
- 1...Rxd2!
- threat
- 1.Qxf7?
- threat
- 2.Sf6#
- 2.Sc7#
- 2.Ba1#
- 2.Bb2#
- 2.Bc3#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 2.Qxe6#
- 2.Qb7#
- 2.Qd7#
- 1...Rxb3
- 2.Qxe6#
- 1...Rxe8
- 2.Qb7#
- 2.Qd7#
- 1...Sxb3
- 2.Qxe6#
- 1...Sxf3
- 2.Sf6#
- 2.Sc7#
- 2.Qxe6#
- 2.Qb7#
- 2.Qd7#
- 2.c4#
- 1...Rc3
- 2.Sf6#
- 2.Sc7#
- 2.Bxc3#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 2.Qxe6#
- 2.Qb7#
- 2.Qd7#
- 1...Re3
- 2.Sf6#
- 2.Sc7#
- 2.Qxe6#
- 2.Qb7#
- 2.Qd7#
- 2.c4#
- 1...Rd4
- 2.Sf6#
- 2.Sc7#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 2.Qxe6#
- 2.Qb7#
- 2.Qd7#
- 1...Rg8
- 2.Sf6#
- 2.Sc7#
- 2.Bg7#
- 2.Qxe6#
- 2.Qb7#
- 2.Qd7#
- 1...Rh8
- 2.Sf6#
- 2.Sc7#
- 2.Ba1#
- 2.Bb2#
- 2.Bc3#
- 2.Bf6#
- 2.Bg7#
- 2.Bxh8#
- 2.Qxe6#
- 2.Qb7#
- 2.Qd7#
- 1...Sc4
- 2.Sf6#
- 2.Sc7#
- 2.Rxd3#
- 2.Qxe6#
- 2.Qb7#
- 1...Se4
- 2.Sc7#
- 2.Rxd3#
- 2.Qxe6#
- 2.Qb7#
- 2.c4#
- 2.fxe4#
- 1...Rxf7!
- threat
- 1.Sc7+?
- Keys
- 1.Sa4!
- threat
- 2.Sb6#
- 1...Rxf3
- 2.c4#
- 1...Sxf3
- 2.Sc3#
- 1...Sxf4
- 2.Sc7#
- 1...Sd4
- 2.Sc7#
- 1...Sc5
- 2.Sc7#
- 1...Sg5
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sg7
- 2.Sc7#
- 1...Sd8
- 2.Sc7#
- 1...Qa7
- 2.Bf6#
- 1...Qb7
- 2.Bf6#
- 1...Qc7
- 2.Sxc7#
- 1...Sc4
- 2.Sc3#
- threat
- 1.Sa4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 10
- REMOVED MATES = 9
- Sets
- Q(g);N_GUARD,P_SPINS(e)::S(M)
- Q(g);N_GUARD,P_SPINS(e)::R(L)+B(K)
- Q(g);OGATE,P_SPINS(e)::QAB1(N),XS(e)
- R(c);P_SPINS(a)::P(D)
- R(c);P_SPINS(a),XP(F)::P(D)
- S(a);N_GUARD,P_SPINR(c),XB(A)::P(D)
- S(a);N_GUARD,P_SPINR(c)::P(D)
- S(a);N_GUARD,P_SPINR(c),XP(F)::P(D)
- S(e);N_GUARD,P_SPINQ(g),XS(J)::S(M)
- Tries
- Try
- S(M);CHECK
- Vars
- Q(g);OGATE,P_SPINS(e),XS(M)::QAB1(N),XS(e)
- Refutation
- S(e);P_SPINQ(g),XS(M)
- Try
- B(K);CHECK
- Vars
- Q(g);OGATE,P_SPINS(e),XR(L)::QAB1(N),XS(e)
- Q(g);OGATE,P_SPINQ(g),P_SPINS(e)::QAB1(N),XS(e)
- Refutation
- S(e);P_SPINQ(g),P_SPINS(e)
- Try
- B(K);CHECK
- Vars
- Q(g);OGATE,P_SPINS(e),XR(L)::QAB1(N),XS(e)
- Q(g);OGATE,P_SPINQ(g),P_SPINS(e)::QAB1(N),XS(e)
- Refutation
- S(e);P_SPINQ(g),P_SPINS(e)
- Try
- B(K);CHECK
- Vars
- Q(g);OGATE,P_SPINS(e),XR(L)::QAB1(N),XS(e)
- Q(g);OGATE,P_SPINQ(g),P_SPINS(e)::QAB1(N),XS(e)
- Refutation
- S(e);P_SPINQ(g),P_SPINS(e)
- Try
- B(K);CHECK
- Vars
- Q(g);OGATE,P_SPINS(e),XR(L)::QAB1(N),XS(e)
- Refutation
- S(e);P_SPINQ(g),P_SPINS(e)
- Try
- B(K);CHECK
- Vars
- Q(g);OGATE,P_SPINS(e),XR(L)::QAB1(N),XS(e)
- Q(g);OGATE,P_SPINQ(g),P_SPINS(e)::QAB1(N),XS(e)
- Refutation
- S(e);P_SPINQ(g),P_SPINS(e)
- Try
- B(K);CHECK
- Vars
- Q(g);OGATE,P_SPINS(e),XR(L)::QAB1(N),XS(e)
- Q(g);OGATE,P_SPINQ(g),P_SPINS(e)::QAB1(N),XS(e)
- Refutation
- S(e);P_SPINQ(g),P_SPINS(e)
- Try
- R(B);P_PINR(c),XS(a)
- Threat
- P(D)
- Vars
- S(e);N_GUARD,P_SPINQ(g),XS(J)::S(M)
- Refutation
- R(c);N_SPINR(c),P_PINP(D),XR(B)
- Try
- Q(N);P_PINS(e),XQ(g)
- Threat
- DUALS(11)
- Vars
- R(c);N_SPINS(e),P_SPINS(a),XP(E)::QAB1(N),XS(e)
- S(a);P_SPINR(c),XP(E)::QAB1(N),XS(e)
- Refutation
- R(h);N_SPINS(e),XQ(N)
- Try
- Actual
- S(J);
- Threat
- S(J)
- Vars
- R(c);P_SPINS(a),XP(F)::P(D)
- S(a);P_SPINR(c),XP(F)::S(J)
- S(e);N_GUARD,P_SPINQ(g),XP(H)::S(M)
- S(e);N_GUARD,P_SPINQ(g)::S(M)
- S(e);N_GUARD,P_SPINQ(g)::S(M),XS(e)
- Q(g);N_GUARD,P_SPINS(e)::R(L)+B(K)
- Q(g);N_GUARD,P_SPINS(e)::S(M),XQ(g)
- S(a);P_SPINR(c)::S(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).