MESON Chess Problem Database
Problem Display
PID: 132589 (4n3/b2NK3/2RPP2p/1PPk2rR/r2p1B2/3Pp1P1/Np2Q3/1B5b w - - 0 1)
Thain, JO
The Field, 1957
(First published on Thu Sep 12 1957)
#2
14 + 10
SOLUTION
- SOUND
- Sets
- 1...Rxa2
- 2.Bxa2#
- 1...Ra3
- 2.Sb4#
- 1...Rb4
- 2.Sxb4#
- 1...Rc4
- 2.dxc4#
- 1...Ra5
- 2.Sb4#
- 1...Ra6
- 2.Sb4#
- 1...Re5
- 2.Rxe5#
- 1...Rf5
- 2.Rxf5#
- 1...Rxh5
- 2.Qxh5#
- 1...Bg2
- 2.Qxg2#
- 1...Bf3
- 2.Qxf3#
- 1...Be4
- 2.dxe4#
- 1...Bxc5
- 2.Rxc5#
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...Sxd6
- 2.Sf6#
- 2.Rxd6#
- 1...Sf6
- 2.Sxf6#
- 1...Sc7
- 2.Sf6#
- 1...Sg7
- 2.Sf6#
- 1...Rxa2
- Tries
- 1.Bxg5?
- threat
- 2.Bxe3#
- 2.Bf4#
- 2.Bh4#
- 2.Bf6#
- 2.Bxh6#
- 1...Sxd6
- 2.Rxd6#
- 1...hxg5
- 2.Rxg5#
- 1...Bf3
- 2.Qxf3#
- 1...Be4
- 2.dxe4#
- 1...Sf6
- 2.Bxf6#
- 1...Sg7!
- threat
- 1.Rc7?
- 1...Rxa2
- 2.Bxa2#
- 1...Rxh5
- 2.Qxh5#
- 1...Bxc5
- 2.Rxc5#
- 1...Sxd6
- 2.Sf6#
- 1...Bb6
- 2.Sxb6#
- 1...Ra3
- 2.Sb4#
- 1...Rb4
- 2.Sxb4#
- 1...Rc4
- 2.dxc4#
- 1...Ra5
- 2.Sb4#
- 1...Ra6
- 2.Sb4#
- 1...Re5
- 2.Rxe5#
- 1...Rf5
- 2.Rxf5#
- 1...Bg2
- 2.Qxg2#
- 1...Bf3
- 2.Qxf3#
- 1...Be4
- 2.dxe4#
- 1...Bb8
- 2.Sb6#
- 1...Sf6
- 2.Sxf6#
- 1...Sg7
- 2.Sf6#
- 1...Sxc7!
- 1...Rxa2
- 1.Rc8?
- 1...Rxa2
- 2.Bxa2#
- 1...Rxh5
- 2.Qxh5#
- 1...Bxc5
- 2.Rxc5#
- 1...Sxd6
- 2.Sf6#
- 1...Bb6
- 2.Sxb6#
- 1...Ra3
- 2.Sb4#
- 1...Rb4
- 2.Sxb4#
- 1...Rc4
- 2.dxc4#
- 1...Ra5
- 2.Sb4#
- 1...Ra6
- 2.Sb4#
- 1...Re5
- 2.Rxe5#
- 1...Rf5
- 2.Rxf5#
- 1...Bg2
- 2.Qxg2#
- 1...Bf3
- 2.Qxf3#
- 1...Be4
- 2.dxe4#
- 1...Bb8
- 2.Sb6#
- 1...Sf6
- 2.Sxf6#
- 1...Sg7
- 2.Sf6#
- 1...Sc7!
- 1...Rxa2
- 1.Qf1?
- threat
- 2.Qxh1#
- 1...Sxd6
- 2.Sf6#
- 2.Rxd6#
- 1...Bg2
- 2.Qxg2#
- 1...Bf3
- 2.Qxf3#
- 1...Be4
- 2.dxe4#
- 1...Sf6
- 2.Sxf6#
- 1...Rxh5!
- threat
- 1.g4?
- 1...Rxa2
- 2.Bxa2#
- 1...Bxc5
- 2.Rxc5#
- 1...Sxd6
- 2.Sf6#
- 2.Rxd6#
- 1...Bg2
- 2.Qxg2#
- 1...Ra3
- 2.Sb4#
- 1...Rb4
- 2.Sxb4#
- 1...Rc4
- 2.dxc4#
- 1...Ra5
- 2.Sb4#
- 1...Ra6
- 2.Sb4#
- 1...Re5
- 2.Rxe5#
- 1...Rf5
- 2.Rxf5#
- 1...Bf3
- 2.Qxf3#
- 1...Be4
- 2.dxe4#
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...Sf6
- 2.Sxf6#
- 1...Sc7
- 2.Sf6#
- 1...Sg7
- 2.Sf6#
- 1...Rxh5!
- 1...Rxa2
- 1.Bxg5?
- Keys
- 1.Kf7!
- 1...Rf5+
- 2.Rxf5#
- 1...Sxd6+
- 2.Rxd6#
- 1...Rxa2
- 2.Bxa2#
- 1...Rxh5
- 2.Qxh5#
- 1...Bxc5
- 2.Rxc5#
- 1...Ra3
- 2.Sb4#
- 1...Rb4
- 2.Sxb4#
- 1...Rc4
- 2.dxc4#
- 1...Ra5
- 2.Sb4#
- 1...Ra6
- 2.Sb4#
- 1...Re5
- 2.Rxe5#
- 1...Bg2
- 2.Qxg2#
- 1...Bf3
- 2.Qxf3#
- 1...Be4
- 2.dxe4#
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...Sf6
- 2.Sxf6#
- 1...Sc7
- 2.Sf6#
- 1...Sg7
- 2.Sf6#
- 1...Rf5+
- 1.Kf7!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(d);OGATE,XS(B)::B(A),XR(d)
- R(d);N_GUARD::S(B)
- R(d);N_GUARD::S(B),XR(d)
- R(d);OGATE::P(D),XR(d)
- R(g);OGATE,P_PINP(L)::R1(I),XR(g)
- R(g);OGATE::R(I),XR(g)
- R(g);N_SPINR(g),OGATE,XR(I)::QAR(C),XR(g)
- B(a);N_GUARD::QAB(C),XB(a)
- B(a);OGATE::P(D),XB(a)
- B(i);OGATE,P_PINP(K),XP(H)::R1(J),XB(i)
- B(i);N_GUARD::S(M),XB(i)
- B(i);N_GUARD::S(M)
- S(j);N_GUARD::S(M),XS(j)
- S(j);N_GUARD::S(M)
- Tries
- Try
- B(F);XR(g)
- Threat
- DUALS(5)
- Vars
- S(j);OGATE,XP(K)::R1(J),XS(j)
- P(h);OGATE,P_SPINP(h),XB(F)::R(I),XP(h)
- B(a);N_GUARD::QAB(C),XB(a)
- B(a);OGATE::P(D),XB(a)
- S(j);::R(I)+B(F),XS(j)
- Refutation
- S(j);
- Try
- R(J);
- Vars
- R(d);OGATE,XS(B)::B(A),XR(d)
- R(g);N_SPINR(g),OGATE,XR(I)::QAR(C),XR(g)
- B(i);OGATE,P_PINP(K),XP(H)::R1(J),XB(i)
- S(j);N_GUARD,XP(K)::S(M)
- B(i);N_GUARD::S(M),XB(i)
- R(d);N_GUARD::S(B)
- R(d);N_GUARD::S(B),XR(d)
- R(d);OGATE::P(D),XR(d)
- R(g);OGATE,P_PINP(L)::R1(I),XR(g)
- R(g);OGATE::R(I),XR(g)
- B(a);N_GUARD::QAB(C),XB(a)
- B(a);OGATE::P(D),XB(a)
- B(i);N_GUARD::S(M)
- S(j);N_GUARD::S(M),XS(j)
- S(j);N_GUARD::S(M)
- Refutation
- S(j);XR(J)
- Try
- R(J);
- Vars
- R(d);OGATE,XS(B)::B(A),XR(d)
- R(g);N_SPINR(g),OGATE,XR(I)::QAR(C),XR(g)
- B(i);OGATE,P_PINP(K),XP(H)::R1(J),XB(i)
- S(j);N_GUARD,XP(K)::S(M)
- B(i);N_GUARD::S(M),XB(i)
- R(d);N_GUARD::S(B)
- R(d);N_GUARD::S(B),XR(d)
- R(d);OGATE::P(D),XR(d)
- R(g);OGATE,P_PINP(L)::R1(I),XR(g)
- R(g);OGATE::R(I),XR(g)
- B(a);N_GUARD::QAB(C),XB(a)
- B(a);OGATE::P(D),XB(a)
- B(i);N_GUARD::S(M)
- S(j);N_GUARD::S(M),XS(j)
- S(j);N_GUARD::S(M)
- Refutation
- S(j);
- Try
- Q(C);
- Threat
- QAB(C),XB(a)
- Vars
- B(a);N_GUARD::QAB(C),XB(a)
- B(a);OGATE::P(D),XB(a)
- S(j);N_GUARD::S(M),XS(j)
- Refutation
- R(g);N_SPINR(g),XR(I)
- Try
- P(E);
- Vars
- R(d);OGATE,XS(B)::B(A),XR(d)
- B(i);OGATE,P_PINP(K),XP(H)::R1(J),XB(i)
- B(a);N_GUARD::QAB(C),XB(a)
- R(d);N_GUARD::S(B)
- R(d);N_GUARD::S(B),XR(d)
- R(d);OGATE::P(D),XR(d)
- R(g);OGATE,P_PINP(L)::R1(I),XR(g)
- R(g);OGATE::R(I),XR(g)
- B(a);OGATE::P(D),XB(a)
- B(i);N_GUARD::S(M),XB(i)
- B(i);N_GUARD::S(M)
- S(j);N_GUARD::S(M),XS(j)
- S(j);N_GUARD::S(M)
- Refutation
- R(g);N_SPINR(g),XR(I)
- Try
- Actual
- K(N);P-FLIGHT
- Vars
- R(g);CHECK,OGATE::R(I),XR(g)
- S(j);CHECK,OGATE,XP(K)::R1(J),XS(j)
- R(d);OGATE,XS(B)::B(A),XR(d)
- R(g);N_SPINR(g),OGATE,XR(I)::QAR(C),XR(g)
- B(i);OGATE,XP(H)::R1(J),XB(i)
- R(d);N_GUARD::S(B)
- R(d);N_GUARD::S(B),XR(d)
- R(d);OGATE::P(D),XR(d)
- R(g);OGATE::R1(I),XR(g)
- B(a);N_GUARD::QAB(C),XB(a)
- B(a);OGATE::P(D),XB(a)
- B(i);N_GUARD::S(M),XB(i)
- B(i);N_GUARD::S(M)
- S(j);N_GUARD::S(M),XS(j)
- S(j);N_GUARD::S(M)
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).