MESON Chess Problem Database
Problem Display
PID: 274792 (nB6/2r1Np1N/1p2p3/1P2kp2/1Q1Rn3/8/6K1/8 w - - 0 1)
Langstaff, William A
Western Morning News, 1925
(First published on Sat Jul 18 1925)
#2
7 + 8
| 15239 | Valois Notebooks | 2024 |
SOLUTION
- SOUND
- Sets
- 1...Sd2
- 2.Sc6#
- 2.Qd6#
- 1...Sf2
- 2.Sc6#
- 2.Qd6#
- 1...Sc3
- 2.Sc6#
- 2.Qd6#
- 1...Sg3
- 2.Sc6#
- 2.Qd6#
- 1...Sc5
- 2.Sc6#
- 1...Sg5
- 2.Sc6#
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sf6
- 2.Sc6#
- 2.Qd6#
- 1...f4
- 2.Rxe4#
- 1...f6
- 2.Sg6#
- 1...Sd2
- Tries
- 1.Kg1?
- 1...Sd2
- 2.Sc6#
- 2.Qd6#
- 1...Sf2
- 2.Sc6#
- 2.Qd6#
- 1...Sc3
- 2.Sc6#
- 2.Qd6#
- 1...Sg3
- 2.Sc6#
- 2.Qd6#
- 1...Sc5
- 2.Sc6#
- 1...Sg5
- 2.Sc6#
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sf6
- 2.Sc6#
- 2.Qd6#
- 1...f4
- 2.Rxe4#
- 1...f6
- 2.Sg6#
- 1...Kf4!
- 1...Sd2
- 1.Kh2?
- 1...Sd2
- 2.Sc6#
- 2.Qd6#
- 1...Sf2
- 2.Sc6#
- 2.Qd6#
- 1...Sc3
- 2.Sc6#
- 2.Qd6#
- 1...Sg3
- 2.Sc6#
- 2.Qd6#
- 1...Sc5
- 2.Sc6#
- 1...Sg5
- 2.Sc6#
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sf6
- 2.Sc6#
- 2.Qd6#
- 1...f4
- 2.Rxe4#
- 1...f6
- 2.Sg6#
- 1...Kf4!
- 1...Sd2
- 1.Bxc7+?
- 1...Sd6
- 2.Sc6#
- 2.Bxd6#
- 2.Qxd6#
- 1...Sxc7!
- 1...Sd6
- 1.Rd3?
- 1...Sc5
- 2.Sc6#
- 2.Qd4#
- 1...Sd2
- 2.Sc6#
- 2.Qd4#
- 1...Sf2
- 2.Sc6#
- 2.Qd4#
- 1...Sc3
- 2.Sc6#
- 2.Qd4#
- 1...Sg3
- 2.Sc6#
- 2.Qd4#
- 1...Sg5
- 2.Sc6#
- 2.Qd4#
- 1...Sd6
- 2.Qd4#
- 1...Sf6
- 2.Sc6#
- 2.Qd4#
- 1...f4
- 2.Qd4#
- 1...f6
- 2.Sg6#
- 1...Kf4!
- 1...Sc5
- 1.Qd2?
- threat
- 2.Sc6#
- 1...Sd6
- 2.Qf4#
- 1...f4!
- threat
- 1.Qb2?
- 1...Sc5
- 2.Sc6#
- 1...Sd2
- 2.Sc6#
- 1...Sf2
- 2.Sc6#
- 1...Sc3
- 2.Sc6#
- 1...Sg3
- 2.Sc6#
- 1...Sg5
- 2.Sc6#
- 1...Sd6
- 2.Rc4#
- 1...Sf6
- 2.Sc6#
- 1...f4
- 2.Rd5#
- 1...f6
- 2.Sg6#
- 1...Kf4!
- 1...Sc5
- 1.Kg1?
- Keys
- 1.Qc3!
- 1...Kf4
- 2.Qg3#
- 1...Sxc3
- 2.Sc6#
- 1...Sc5
- 2.Sc6#
- 1...Sd2
- 2.Sc6#
- 1...Sf2
- 2.Sc6#
- 1...Sg3
- 2.Sc6#
- 1...Sg5
- 2.Sc6#
- 1...Sd6
- 2.Rc4#
- 1...Sf6
- 2.Sc6#
- 1...f4
- 2.Rd5#
- 1...f6
- 2.Sg6#
- 1...Kf4
- 1.Qc3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- S(a);::S(E)
- S(a);N_GUARD,N_SPINR(f)::QAB1(B),XS(a)
- P(c);N_GUARD::R1(C),XS(a)
- P(g);N_GUARD::S(E)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- S(a);::S(E)
- S(a);N_GUARD,N_SPINR(f)::QAB1(B),XS(a)
- P(c);N_GUARD::R1(C),XS(a)
- P(g);N_GUARD::S(E)
- Refutation
- K(b);P_SPINS(a),S_FLIGHT
- Try
- K(A);P-FLIGHT
- Vars
- S(a);::S(E)
- S(a);N_GUARD,N_SPINR(f)::QAB1(B),XS(a)
- P(c);N_GUARD::R1(C),XS(a)
- P(g);N_GUARD::S(E)
- Refutation
- K(b);P_SPINS(a),S_FLIGHT
- Try
- B(G);CHECK,XR(f)
- Refutation
- S(h);XB(G)
- Try
- R(C);
- Vars
- S(a);N_SPINR(f)::QAB1(B)
- P(c);SBLOCK::QAB1(B)
- P(g);N_GUARD::S(E)
- Refutation
- K(b);P_SPINS(a),S_FLIGHT
- Try
- Q(B);
- Threat
- S(E)
- Vars
- S(a);N_SPINR(f)::QAB1(B)
- Refutation
- P(c);
- Try
- Q(B);
- Vars
- S(a);::S(E)
- S(a);N_GUARD,N_SPINR(f),SBLOCK::QAB(B)+R(C)
- P(c);SBLOCK::QAB(B)+R(C),DCHECK
- P(g);N_GUARD::S(E)
- Refutation
- K(b);P_SPINS(a),S_FLIGHT
- Try
- Actual
- Q(B);
- Vars
- K(b);N_GUARD,P_SPINS(a),S_CUTP(c),S_FLIGHT::QAB1(B)
- S(a);XQ(B)::S(E)
- S(a);::S(E)
- S(a);N_GUARD,N_SPINR(f),SBLOCK::QAB(B)+R(C)
- P(c);SBLOCK::QAB(B)+R(C),DCHECK
- P(g);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).