MESON Chess Problem Database
Problem Display
PID: 159718 (3N1Q2/2r2p2/4pPB1/R2qk1B1/4p1PN/1p6/8/3R3K w - - 0 1)
Anonymous
BCPJ (June), 1919
#2
10 + 7
SOLUTION
- SOUND
- Sets
- 1...Qxa5
- 2.Qd6#
- 1...Qb5
- 2.Qd6#
- 1...Qc5
- 2.Qd6#
- 1...Rc1
- 2.Sxf7#
- 1...Rc2
- 2.Sxf7#
- 1...Rc3
- 2.Sxf7#
- 1...Rc4
- 2.Sxf7#
- 1...Rc5
- 2.Sxf7#
- 1...Rc6
- 2.Sxc6#
- 2.Sxf7#
- 1...Ra7
- 2.Sc6#
- 1...Rb7
- 2.Sc6#
- 1...Rd7
- 2.Sc6#
- 1...Rc8
- 2.Sxf7#
- 1...e3+
- 2.Sf3#
- 1...fxg6
- 2.Sxg6#
- 1...Qxa5
- Tries
- 1.Sf5?
- threat
- 2.Qd6#
- 1...exf5
- 2.Rdxd5#
- 2.Raxd5#
- 1...Rc5
- 2.Sxf7#
- 1...Rc6
- 2.Sxc6#
- 2.Sxf7#
- 1...Rd7
- 2.Sc6#
- 1...Re7
- 2.Sc6#
- 1...e3+!
- threat
- 1.Qb4?
- 1...e3+
- 2.Sf3#
- 1...Qxa5
- 2.Qd6#
- 2.Qd4#
- 2.Qxe4#
- 1...fxg6
- 2.Sxg6#
- 1...Rc5
- 2.Sxf7#
- 1...Qb5
- 2.Qd6#
- 2.Qd4#
- 2.Qxe4#
- 1...Qc5
- 2.Qc3#
- 2.Qd4#
- 2.Qxe4#
- 1...Rc1
- 2.Sxf7#
- 1...Rc2
- 2.Sxf7#
- 1...Rc3
- 2.Sxf7#
- 1...Rc4
- 2.Sxf7#
- 1...Rc6
- 2.Sxc6#
- 2.Sxf7#
- 1...Ra7
- 2.Sc6#
- 1...Rb7
- 2.Sc6#
- 1...Rd7
- 2.Sc6#
- 1...Re7
- 2.Sc6#
- 1...Rc8
- 2.Sxf7#
- 1...b2!
- 1...e3+
- 1.Qc5?
- threat
- 2.Qxc7#
- 1...e3+
- 2.Sf3#
- 1...Rxc5
- 2.Sxf7#
- 1...Rc6
- 2.Sxc6#
- 2.Sxf7#
- 1...Ra7
- 2.Sc6#
- 1...Rb7
- 2.Sc6#
- 1...Rd7
- 2.Sc6#
- 1...Re7
- 2.Sc6#
- 1...Rc8
- 2.Sxf7#
- 1...Qxc5!
- threat
- 1.Qe7?
- threat
- 2.Sxf7#
- 2.Rdxd5#
- 2.Raxd5#
- 2.Qxc7#
- 1...e3+
- 2.Sf3#
- 2.Rdxd5#
- 2.Raxd5#
- 1...Qxa5
- 2.Sxf7#
- 2.Qd6#
- 1...fxg6
- 2.Sxg6#
- 2.Sf7#
- 2.Rdxd5#
- 2.Raxd5#
- 2.Qxe6#
- 2.Qxc7#
- 1...Qb5
- 2.Sxf7#
- 2.Qd6#
- 2.Qxc7#
- 1...Qc5
- 2.Sxf7#
- 2.Qd6#
- 2.Qxc7#
- 1...Rc1
- 2.Sxf7#
- 2.Rxd5#
- 1...Rc2
- 2.Sxf7#
- 2.Rdxd5#
- 2.Raxd5#
- 1...Rc3
- 2.Sxf7#
- 2.Rdxd5#
- 2.Raxd5#
- 1...Rc4
- 2.Sxf7#
- 2.Rdxd5#
- 2.Raxd5#
- 1...Rc5
- 2.Sxf7#
- 1...Rc6
- 2.Sxc6#
- 2.Sxf7#
- 2.Rdxd5#
- 2.Raxd5#
- 1...Ra7
- 2.Sc6#
- 2.Sxf7#
- 2.Rdxd5#
- 2.Raxd5#
- 1...Rb7
- 2.Sc6#
- 2.Sxf7#
- 2.Rdxd5#
- 2.Raxd5#
- 1...Rd7
- 2.Sc6#
- 2.Sxf7#
- 1...Rc8
- 2.Sxf7#
- 2.Rdxd5#
- 2.Raxd5#
- 1...Rxe7!
- threat
- 1.Sf5?
- Keys
- 1.Qa3!
- 1...e3+
- 2.Sf3#
- 1...Qxa5
- 2.Qd6#
- 1...fxg6
- 2.Sxg6#
- 1...Rc5
- 2.Sxf7#
- 1...b2
- 2.Qg3#
- 1...Qb5
- 2.Qd6#
- 1...Qc5
- 2.Qb2#
- 1...Rc1
- 2.Sxf7#
- 1...Rc2
- 2.Sxf7#
- 1...Rc3
- 2.Sxf7#
- 1...Rc4
- 2.Sxf7#
- 1...Rc6
- 2.Sxc6#
- 2.Sxf7#
- 1...Ra7
- 2.Sc6#
- 1...Rb7
- 2.Sc6#
- 1...Rd7
- 2.Sc6#
- 1...Re7
- 2.Sc6#
- 1...Rc8
- 2.Sxf7#
- 1...e3+
- 1.Qa3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- Q(c);N_SPINQ(c),XR(E)::QAB1(J)
- Q(c);::QAB1(J)
- R(f);N_GUARD,P_PINR(A)::S(I),XP(g)
- R(f);N_GUARD::S(I),XP(g)
- R(f);N_GUARD,N_SPINQ(c)::S(I),XP(g)
- R(f);N_GUARD::S(I)
- P(b);CHECK,N_GUARD::S(D)
- P(g);XB(H)::S(D),XP(g)
- Tries
- Try
- S(D);
- Threat
- QAB1(J)
- Vars
- R(f);N_GUARD,N_SPINQ(c)::S(I),XP(g)
- R(f);N_GUARD::S(I)
- Refutation
- P(b);CHECK
- Try
- Q(J);
- Vars
- P(b);CHECK,N_GUARD::S(D)
- P(g);XB(H)::S(D),XP(g)
- R(f);N_GUARD,N_SPINQ(c)::S(I),XP(g)
- R(f);N_GUARD,P_PINR(A)::S(I),XP(g)
- R(f);N_GUARD::S(I),XP(g)
- R(f);N_GUARD::S(I)
- Refutation
- P(a);
- Try
- Q(J);
- Threat
- QAB(J),XR(f)
- Vars
- P(b);CHECK,N_GUARD::S(D)
- R(f);N_GUARD,N_SPINQ(c),XQ(J)::S(I),XP(g)
- R(f);N_GUARD::S(I)
- R(f);N_GUARD::S(I),XP(g)
- Refutation
- Q(c);XQ(J)
- Try
- Q(J);P_PINP(e)
- Threat
- DUALS(4)
- Vars
- R(f);N_SPINQ(c)::S(I),XP(g)
- Refutation
- R(f);N_SPINP(e),XQ(J)
- Try
- Actual
- Q(J);
- Vars
- P(b);CHECK,N_GUARD::S(D)
- Q(c);N_SPINQ(c),XR(E)::QAB1(J)
- P(g);XB(H)::S(D),XP(g)
- R(f);N_GUARD,N_SPINQ(c)::S(I),XP(g)
- P(a);OGATE::QAB(J)
- Q(c);::QAB1(J)
- Q(c);S_CUTR(f)::QAB(J)
- R(f);N_GUARD,P_PINR(A)::S(I),XP(g)
- R(f);N_GUARD::S(I),XP(g)
- R(f);N_GUARD::S(I)
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).