MESON Chess Problem Database
Problem Display
PID: 76732 (B7/p1b3Q1/rk1pp1p1/p4pR1/P1P1NN2/4K3/1p2n3/1r6 w - - 0 1)
Paris, MW
Sedgwick, Stanley
The Chess Problem, 1946
#2
8 + 12
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qxb2#
- 1...Rc1
- 2.Qxb2#
- 1...Rd1
- 2.Qxb2#
- 1...Re1
- 2.Qxb2#
- 1...Rf1
- 2.Qxb2#
- 1...Rg1
- 2.Qxb2#
- 1...Rh1
- 2.Qxb2#
- 1...Bb8
- 2.Qb7#
- 1...Bd8
- 2.Qb7#
- 1...Sc1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sxf4
- 2.Qd4#
- 1...fxe4
- 2.Rb5#
- 1...d5
- 2.c5#
- 1...e5
- 2.Sd5#
- 1...Ra1
- Tries
- 1.Kd2?
- 1...Sxf4
- 2.Qd4#
- 1...fxe4
- 2.Rb5#
- 1...Ra1
- 2.Qxb2#
- 1...Rc1
- 2.Qxb2#
- 1...Re1
- 2.Qxb2#
- 1...Rf1
- 2.Qxb2#
- 1...Rg1
- 2.Qxb2#
- 1...Rh1
- 2.Qxb2#
- 1...Bb8
- 2.Qb7#
- 1...Bd8
- 2.Qb7#
- 1...Sc1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...d5
- 2.c5#
- 1...e5
- 2.Sd5#
- 1...Rd1+!
- 1...Sxf4
- 1.Kxe2?
- threat
- 2.Qd4#
- 1...Rd1
- 2.Qxb2#
- 1...Bb8
- 2.Qb7#
- 1...Bd8
- 2.Qb7#
- 1...e5
- 2.Sd5#
- 1...Re1+!
- threat
- 1.Kf2?
- 1...Sxf4
- 2.Qd4#
- 1...fxe4
- 2.Rb5#
- 1...Ra1
- 2.Qxb2#
- 1...Rc1
- 2.Qxb2#
- 1...Rd1
- 2.Qxb2#
- 1...Re1
- 2.Qxb2#
- 1...Rg1
- 2.Qxb2#
- 1...Rh1
- 2.Qxb2#
- 1...Bb8
- 2.Qb7#
- 1...Bd8
- 2.Qb7#
- 1...Sc1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...d5
- 2.c5#
- 1...e5
- 2.Sd5#
- 1...Rf1+!
- 1...Sxf4
- 1.Sxe6?
- threat
- 2.Qxc7#
- 1...Bb8
- 2.Qb7#
- 1...Bd8
- 2.Qb7#
- 1...f4+!
- threat
- 1.Rxf5?
- threat
- 2.Rb5#
- 1...exf5
- 2.Sd5#
- 1...e5
- 2.Sd5#
- 1...Sc3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...d5
- 2.c5#
- 1...gxf5!
- threat
- 1.Rxg6?
- 1...Sxf4
- 2.Qd4#
- 1...e5
- 2.Sd5#
- 2.c5#
- 1...Ra1
- 2.Qxb2#
- 1...Rc1
- 2.Qxb2#
- 1...Rd1
- 2.Qxb2#
- 1...Re1
- 2.Qxb2#
- 1...Rf1
- 2.Qxb2#
- 1...Rg1
- 2.Qxb2#
- 1...Rh1
- 2.Qxb2#
- 1...Bb8
- 2.Qb7#
- 1...Bd8
- 2.Qb7#
- 1...Sc1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...d5
- 2.Sxd5#
- 2.c5#
- 1...fxe4!
- 1...Sxf4
- 1.Qe5?
- threat
- 2.Qb5#
- 1...dxe5
- 2.c5#
- 1...Bd8
- 2.Qxd6#
- 1...Sc3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...d5
- 2.c5#
- 1...Bb8!
- threat
- 1.Qf6?
- 1...Sxf4
- 2.Qd4#
- 1...fxe4
- 2.Rb5#
- 1...Bd8
- 2.Qxd8#
- 1...e5
- 2.Sd5#
- 2.c5#
- 1...Ra1
- 2.Qxb2#
- 1...Rc1
- 2.Qxb2#
- 1...Rd1
- 2.Qxb2#
- 1...Re1
- 2.Qxb2#
- 1...Rf1
- 2.Qxb2#
- 1...Rg1
- 2.Qxb2#
- 1...Rh1
- 2.Qxb2#
- 1...Sc1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...d5
- 2.Sxd5#
- 2.c5#
- 1...Bb8!
- 1...Sxf4
- 1.Qd7?
- threat
- 2.Qb5#
- 2.Qc6#
- 1...Bb8
- 2.Qc6#
- 2.Qb7#
- 1...Bd8
- 2.Qc6#
- 2.Qxd6#
- 2.Qb7#
- 2.Qxd8#
- 1...Sc3
- 2.Qc6#
- 1...Sd4!
- threat
- 1.Kd2?
- Keys
- 1.Qh8!
- 1...Sxf4
- 2.Qd4#
- 1...fxe4
- 2.Rb5#
- 1...Bb8
- 2.Qxb8#
- 1...Bd8
- 2.Qxd8#
- 1...Ra1
- 2.Qxb2#
- 1...Rc1
- 2.Qxb2#
- 1...Rd1
- 2.Qxb2#
- 1...Re1
- 2.Qxb2#
- 1...Rf1
- 2.Qxb2#
- 1...Rg1
- 2.Qxb2#
- 1...Rh1
- 2.Qxb2#
- 1...Sc1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...d5
- 2.c5#
- 1...e5
- 2.Sd5#
- 1...Sxf4
- 1.Qh8!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD::QAR(G),XP(b)
- B(l);OGATE::QAR1(G)
- S(c);N_GUARD::QAB(G)
- S(c);N_GUARD::QAB(G),XS(c)
- S(c);N_GUARD,XS(E)::QAB(G)
- P(e);OGATE,XS(D)::R1(F)
- P(h);N_GUARD::P(C)
- P(i);N_GUARD::S(E)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- S(c);N_GUARD,XS(E)::QAB(G)
- P(e);OGATE,XS(D)::R1(F)
- R(a);N_GUARD::QAR(G),XP(b)
- B(l);OGATE::QAR1(G)
- S(c);N_GUARD::QAB(G)
- S(c);N_GUARD::QAB(G),XS(c)
- P(h);N_GUARD::P(C)
- P(i);N_GUARD::S(E)
- Refutation
- R(a);CHECK
- Try
- K(A);P-FLIGHT,XS(c)
- Threat
- QAB(G)
- Vars
- R(a);N_GUARD::QAR(G),XP(b)
- B(l);OGATE::QAR1(G)
- P(i);N_GUARD::S(E)
- Refutation
- R(a);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- S(c);N_GUARD,XS(E)::QAB(G)
- P(e);OGATE,XS(D)::R1(F)
- R(a);N_GUARD::QAR(G),XP(b)
- B(l);OGATE::QAR1(G)
- S(c);N_GUARD::QAB(G)
- S(c);N_GUARD::QAB(G),XS(c)
- P(h);N_GUARD::P(C)
- P(i);N_GUARD::S(E)
- Refutation
- R(a);CHECK
- Try
- S(E);XP(i)
- Threat
- QAB1(G),XB(l)
- Vars
- B(l);OGATE::QAR1(G)
- Refutation
- P(e);CHECK
- Try
- R(F);XP(e)
- Threat
- R1(F)
- Vars
- P(i);N_GUARD,XR(F)::S(E)
- P(i);N_GUARD::S(E)
- S(c);N_GUARD::QAB(G)
- S(c);N_GUARD::QAB(G),XS(c)
- P(h);N_GUARD::P(C)
- Refutation
- P(j);XR(F)
- Try
- R(F);XP(j)
- Vars
- S(c);N_GUARD,XS(E)::QAB(G)
- R(a);N_GUARD::QAR(G),XP(b)
- B(l);OGATE::QAR1(G)
- S(c);N_GUARD::QAB(G)
- S(c);N_GUARD::QAB(G),XS(c)
- Refutation
- P(e);XS(D)
- Try
- Q(G);
- Threat
- QAR1(G)
- Vars
- P(h);N_GUARD,XQ(G)::P(C)
- B(l);N_GUARD::QAR2(G),XP(h)
- S(c);N_GUARD::QAB(G)
- S(c);N_GUARD::QAB(G),XS(c)
- P(h);N_GUARD::P(C)
- Refutation
- B(l);
- Try
- Q(G);
- Vars
- S(c);N_GUARD,XS(E)::QAB(G)
- P(e);OGATE,XS(D)::R1(F)
- B(l);OGATEB::QAB(G),XB(l)
- R(a);N_GUARD::QAR(G),XP(b)
- S(c);N_GUARD::QAB(G)
- S(c);N_GUARD::QAB(G),XS(c)
- Refutation
- B(l);
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- S(c);::QAR1(G)
- Refutation
- S(c);
- Try
- Actual
- Q(G);
- Vars
- S(c);N_GUARD,XS(E)::QAB(G)
- P(e);OGATE,XS(D)::R1(F)
- B(l);N_GUARD::QAR2(G),XB(l)
- B(l);OGATEB::QAB(G),XB(l)
- R(a);N_GUARD::QAR(G),XP(b)
- S(c);N_GUARD::QAB(G)
- S(c);N_GUARD::QAB(G),XS(c)
- P(h);N_GUARD::P(C)
- P(i);N_GUARD::S(E)
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).