MESON Chess Problem Database
Problem Display
PID: 64267 (B3n3/4Bq2/R3N3/P3kPP1/R5PN/r4Q1K/8/rbb2n2 w - - 0 1)
Reay, LW
Chess, 1946
#2
12 + 8
SOLUTION
- SOUND
- Sets
- 1...Qxe6
- 2.Rxe6#
- 1...Qg6
- 2.Sxg6#
- 1...Qxe7
- 2.Sg6#
- 1...Qf8
- 2.Sg6#
- 1...Ra2
- 2.Qd5#
- 2.Qc3#
- 1...Rc3
- 2.Qxc3#
- 1...Rd3
- 2.Re4#
- 1...Rxf3+
- 2.Sxf3#
- 1...Rxa4
- 2.Qd5#
- 1...Ba2
- 2.Re4#
- 1...Bd3
- 2.Qd5#
- 1...Be4
- 2.Rxe4#
- 1...Be3
- 2.Qd5#
- 1...Se3
- 2.Qg3#
- 2.Qf4#
- 1...Sg3
- 2.Qd5#
- 1...Sd6
- 2.Bxd6#
- 1...Sf6
- 2.Bd6#
- 1...Sc7
- 2.Bd6#
- 1...Sg7
- 2.Bd6#
- 1...Qxe6
- Tries
- 1.Bxa3?
- threat
- 2.Qd5#
- 2.Qc3#
- 1...Qxe6
- 2.Rxe6#
- 2.Qc3#
- 1...Bxg5
- 2.Bb2#
- 2.Qc3#
- 1...Qa7
- 2.Sg6#
- 2.Qd5#
- 1...Qb7
- 2.Sg6#
- 1...Qc7
- 2.Sg6#
- 2.Qd5#
- 1...Qd7
- 2.Sg6#
- 1...Ba2
- 2.Re4#
- 2.Qe4#
- 2.Qc3#
- 1...Bd3
- 2.Qd5#
- 1...Be4
- 2.Rxe4#
- 2.Qxe4#
- 2.Qc3#
- 1...Bb2
- 2.Bxb2#
- 2.Qd5#
- 2.Qf4#
- 1...Bd2
- 2.Qd5#
- 1...Be3
- 2.Qd5#
- 1...Se3
- 2.Qg3#
- 2.Qf4#
- 1...Sf6
- 2.Bd6#
- 2.Qc3#
- 1...Sc7
- 2.Bd6#
- 2.Qc3#
- 1...Rxa3!
- threat
- 1.Bc5?
- threat
- 2.Bd4#
- 1...Rxf3+
- 2.Sxf3#
- 1...Rxa4
- 2.Qd5#
- 1...Qa7
- 2.Sg6#
- 1...Qd7
- 2.Sg6#
- 1...Rd3
- 2.Re4#
- 1...Be3
- 2.Qd5#
- 1...Bb2!
- threat
- 1.Rb4?
- threat
- 2.Rb5#
- 1...Rxf3+
- 2.Sxf3#
- 1...Qxe6
- 2.Rxe6#
- 1...Qxe7
- 2.Sg6#
- 1...Rxa5
- 2.Qc3#
- 1...Rc3
- 2.Qxc3#
- 1...Rd3
- 2.Re4#
- 1...Ba2
- 2.Re4#
- 1...Bd3
- 2.Qd5#
- 1...Be4
- 2.Rxe4#
- 1...Be3
- 2.Qd5#
- 1...Se3
- 2.Qg3#
- 2.Qf4#
- 1...Sd6
- 2.Bxd6#
- 1...Sf6
- 2.Bd6#
- 1...Sc7
- 2.Bd6#
- 1...Rb3!
- threat
- 1.Qxa3?
- threat
- 2.Sf3#
- 2.Qc5#
- 2.Qc3#
- 1...Qxe6
- 2.Sf3#
- 2.Rxe6#
- 2.Qc3#
- 1...Qxf5
- 2.Qc5#
- 2.Qc3#
- 1...Qxe7
- 2.Sf3#
- 2.Sg6#
- 2.Qc3#
- 1...Bxa3
- 2.Sf3#
- 1...Qh5
- 2.Qc5#
- 2.Qc3#
- 1...Qh7
- 2.Qc5#
- 2.Qc3#
- 1...Ba2
- 2.Sf3#
- 2.Re4#
- 2.Qc3#
- 1...Be4
- 2.Rxe4#
- 2.Qc3#
- 1...Bb2
- 2.Sf3#
- 2.Qxb2#
- 2.Qc5#
- 1...Bd2
- 2.Sf3#
- 2.Qc5#
- 1...Be3
- 2.Sf3#
- 1...Sd2
- 2.Qc5#
- 2.Qc3#
- 2.Qg3#
- 1...Sh2
- 2.Qc5#
- 2.Qc3#
- 1...Se3
- 2.Sf3#
- 2.Qc3#
- 1...Sf6
- 2.Sf3#
- 2.Bd6#
- 2.Qd6#
- 2.Qc3#
- 1...Sc7
- 2.Sf3#
- 2.Bd6#
- 2.Qd6#
- 2.Qc3#
- 1...Rxa3+!
- threat
- 1.Qe3+?
- 1...Be4
- 2.Sf3#
- 2.Rxe4#
- 1...Bxe3
- 2.Sf3#
- 1...Sxe3
- 2.Sf3#
- 1...Rxe3+!
- 1...Be4
- 1.Bxa3?
- Keys
- 1.Rc4!
- threat
- 2.Rc5#
- 1...Rxf3+
- 2.Sxf3#
- 1...Qxe6
- 2.Rxe6#
- 1...Qxe7
- 2.Sg6#
- 1...Rxa5
- 2.Qc3#
- 1...Rc3
- 2.Qxc3#
- 1...Rd3
- 2.Re4#
- 1...Ba2
- 2.Re4#
- 1...Be4
- 2.Rxe4#
- 1...Be3
- 2.Qd5#
- 1...Se3
- 2.Qg3#
- 2.Qf4#
- 1...Sf6
- 2.Bd6#
- 1...Sc7
- 2.Bd6#
- threat
- 1.Rc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- Q(g);OGATE,XS(J)::R1(I),XQ(g)
- Q(g);N_GUARD::S(E),XQ(g)
- Q(g);N_GUARD,XB(K)::S(E)
- Q(g);N_GUARD::S(E)
- R(e);N_GUARD::QAB(A),XR(e)
- R(e);S_CUTB(b)::R1(C)
- R(e);CHECK,XQ(A)::S(E),XR(e)
- R(e);N_PINQ(A),XR(C)::QAR1(A)
- B(b);N_GUARD::R1(C)
- B(b);N_PINQ(A)::QAR1(A)
- B(b);N_GUARD::R1(C),XB(b)
- B(c);N_PINQ(A)::QAR1(A)
- S(d);N_PINQ(A)::QAR1(A)
- S(h);N_GUARD::B(K),XS(h)
- S(h);N_GUARD::B(K)
- Tries
- Try
- B(K);N_SPINQ(A),XR(e)
- Threat
- DUALS(2)
- Vars
- Q(g);N_GUARD::S(E)
- B(b);::QAR1(A)
- B(c);::QAR1(A)
- Refutation
- R(a);P_PINQ(A),XB(K)
- Try
- B(K);
- Threat
- B(K)
- Vars
- R(e);CHECK,XQ(A)::S(E),XR(e)
- R(e);N_PINQ(A),XR(C)::QAR1(A)
- Q(g);N_GUARD::S(E)
- R(e);S_CUTB(b)::R1(C)
- B(c);N_PINQ(A)::QAR1(A)
- Refutation
- B(c);
- Try
- R(C);
- Threat
- R(C)
- Vars
- R(e);CHECK,XQ(A)::S(E),XR(e)
- Q(g);OGATE,XS(J)::R1(I),XQ(g)
- Q(g);N_GUARD,XB(K)::S(E)
- R(e);N_GUARD,N_PINQ(A),XP(F)::QAB(A)
- R(e);N_GUARD::QAB(A),XR(e)
- R(e);S_CUTB(b)::R1(C)
- B(b);N_GUARD::R1(C)
- B(b);N_PINQ(A)::QAR1(A)
- B(b);N_GUARD::R1(C),XB(b)
- B(c);N_PINQ(A)::QAR1(A)
- S(h);N_GUARD::B(K),XS(h)
- S(h);N_GUARD::B(K)
- Refutation
- R(e);
- Try
- Q(A);N_SPINQ(A),XR(e)
- Threat
- DUALS(3)
- Vars
- B(c);XQ(A)::S(E)
- B(c);::S(E)
- Refutation
- R(a);CHECK,XQ(A)
- Try
- Q(A);CHECK
- Vars
- B(c);XQ(A)::S(E)
- S(d);XQ(A)::S(E)
- Refutation
- R(e);CHECK,XQ(A)
- Try
- Actual
- R(C);
- Threat
- R(C)
- Vars
- R(e);CHECK,XQ(A)::S(E),XR(e)
- Q(g);OGATE,XS(J)::R1(I),XQ(g)
- Q(g);N_GUARD,XB(K)::S(E)
- R(e);N_GUARD,N_PINQ(A),XP(F)::QAB(A)
- R(e);N_GUARD::QAB(A),XR(e)
- R(e);S_CUTB(b)::R1(C)
- B(b);N_GUARD::R1(C)
- B(b);N_GUARD::R1(C),XB(b)
- B(c);N_PINQ(A)::QAR1(A)
- S(h);N_GUARD::B(K)
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).