MESON Chess Problem Database

Problem Display
PID: 114896 (8/8/8/8/8/1Q1K2p1/6k1/5RnR w - - 0 1)

Atkinson, William

Montreal Gazette, 1892

8/8/8/8/8/1Q1K2p1/6k1/5RnR

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Se2
      • 2.Qd5#
      • 2.Qb7#
    • 1...Sh3
      • 2.Qd5#
      • 2.Qb7#
  • Tries
    • 1.Kd2?
      • 1...Sf3+
        • 2.Qxf3#
      • 1...Kxf1
        • 2.Qf3#
      • 1...Se2
        • 2.Qd5#
        • 2.Qf3#
        • 2.Qb7#
      • 1...Sh3
        • 2.Qd5#
        • 2.Qf3#
        • 2.Qb7#
      • 1...Kxh1!
    • 1.Rfxg1+?
      • 1...Kf2
        • 2.Qf7#
      • 1...Kf3!
    • 1.Qd1?
      • 1...Se2
        • 2.Qxe2#
      • 1...Sf3
        • 2.Qe2#
        • 2.Qxf3#
      • 1...Sh3
        • 2.Qf3#
      • 1...Kxh1!
    • 1.Qa2+?
      • 1...Kxf1
        • 2.Qe2#
      • 1...Se2
        • 2.Qd5#
        • 2.Qxe2#
        • 2.Qa8#
      • 1...Kxh1!
    • 1.Qc2+?
      • 1...Kxf1
        • 2.Qe2#
      • 1...Se2
        • 2.Qxe2#
        • 2.Qc6#
      • 1...Kxh1!
    • 1.Qd5+?
      • 1...Sf3
        • 2.Qxf3#
      • 1...Kxf1!
    • 1.Qf7?
      • threat
        • 2.Rfxg1#
      • 1...Se2
        • 2.Qd5#
        • 2.Qf3#
        • 2.Qb7#
      • 1...Sf3
        • 2.Qxf3#
      • 1...Sh3
        • 2.Qd5#
        • 2.Qf3#
        • 2.Qb7#
      • 1...Kxh1!
    • 1.Qb2+?
      • 1...Kxf1
        • 2.Qe2#
      • 1...Se2
        • 2.Qxe2#
        • 2.Qb7#
      • 1...Kxh1!
    • 1.Qb6?
      • threat
        • 2.Qxg1#
      • 1...Kxf1
        • 2.Rxg1#
        • 2.Qxg1#
      • 1...Kxh1
        • 2.Qxg1#
      • 1...Se2
        • 2.Qc6#
        • 2.Qb7#
      • 1...Sh3
        • 2.Qc6#
        • 2.Qb7#
      • 1...Sf3!
    • 1.Qb7+?
      • 1...Sf3
        • 2.Qxf3#
      • 1...Kxf1!
  • Keys
    • 1.Qe6!
      • 1...Kxf1
        • 2.Qe2#
      • 1...Kxh1
        • 2.Qh3#
      • 1...Se2
        • 2.Qh3#
        • 2.Qd5#
        • 2.Qxe2#
        • 2.Qe4#
        • 2.Qc6#
      • 1...Sf3
        • 2.Qh3#
        • 2.Qe2#
      • 1...Sh3
        • 2.Qxh3#
        • 2.Qd5#
        • 2.Qe4#
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • S(a);CHECK,N_GUARD::QAB1(C),XS(a)
        • K(b);P_SPINS(a),S_FLIGHT,XR(A)::QAR2(C)
      • Refutation
        • K(b);P_SPINS(a),S_FLIGHT,XR(B)
    • Try
      • R(A);CHECK,XS(a)
      • Vars
        • K(b);P-FLIGHT::QAR(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • S(a);N_GUARD::QAR2(C),XS(a)
        • S(a);N_GUARD::QAB1(C)
      • Refutation
        • K(b);P_SPINS(a),S_FLIGHT,XR(B)
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);P_SPINS(a),S_FLIGHT,XR(A)::QAB1(C)
      • Refutation
        • K(b);P_SPINS(a),S_FLIGHT,XR(B)
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);P_SPINS(a),S_FLIGHT,XR(A)::QAB1(C)
      • Refutation
        • K(b);P_SPINS(a),S_FLIGHT,XR(B)
    • Try
      • Q(C);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(C),XS(a)
      • Refutation
        • K(b);P_SPINS(a),S_FLIGHT,XR(A)
    • Try
      • Q(C);
      • Threat
        • R1(A),XS(a)
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
      • Refutation
        • K(b);P_SPINS(a),S_FLIGHT,XR(B)
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);P_SPINS(a),S_FLIGHT,XR(A)::QAB1(C)
      • Refutation
        • K(b);P_SPINS(a),S_FLIGHT,XR(B)
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XS(a)
      • Vars
        • K(b);P_SPINS(a),S_FLIGHT,XR(B)::QAR1(C),XS(a)
      • Refutation
        • S(a);
    • Try
      • Q(C);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(C),XS(a)
      • Refutation
        • K(b);P_SPINS(a),S_FLIGHT,XR(A)
  • Actual
    • Q(C);
    • Vars
      • K(b);P_SPINS(a),S_FLIGHT,XR(A)::QAB1(C)
      • K(b);P_SPINS(a),S_FLIGHT,XR(B)::QAR2(C)
HTML5 logo

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).