MESON Chess Problem Database

Problem Display
PID: 76888 (8/3K4/pR6/1nk5/1R6/1P6/1P2P3/4Q3 w - - 0 1)

Butwillo, Brother

The Tablet, 1947

(First published on Sat Oct 11 1947)

8/3K4/pR6/1nk5/1R6/1P6/1P2P3/4Q3

#2

7 + 3

15239 Valois Notebooks 2016

SOLUTION

  • SOUND
  • Sets
    • 1...a5
      • 2.R6xb5#
  • Tries
    • 1.Qd2?
      • threat
        • 2.Rc6#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sc3
        • 2.Qd4#
        • 2.Qd6#
      • 1...Sa7
        • 2.Qg5#
        • 2.Qd4#
        • 2.Qd6#
      • 1...Kxb6!
    • 1.Qf2+?
      • 1...Kd5
        • 2.Qf5#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Kxb4!
    • 1.Qc3+?
      • 1...Kd5
        • 2.e4#
      • 1...Kxb6
        • 2.Qc7#
      • 1...Sxc3!
    • 1.Qh4?
      • 1...Kd5
        • 2.Qg5#
        • 2.Qh5#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sa3
        • 2.Qg5#
        • 2.Qd4#
        • 2.Qh5#
      • 1...Sc3
        • 2.Qc4#
        • 2.Qd4#
      • 1...Sd6
        • 2.Qd4#
      • 1...Sa7
        • 2.Qg5#
        • 2.Qc4#
        • 2.Qd4#
        • 2.Qh5#
      • 1...Sc7
        • 2.Qc4#
        • 2.Qd4#
      • 1...a5
        • 2.R4xb5#
        • 2.R6xb5#
      • 1...Kxb6!
    • 1.Qc1+?
      • 1...Kxb4
        • 2.Qc3#
      • 1...Kd5
        • 2.Qg5#
      • 1...Kxb6
        • 2.Qc7#
      • 1...Sc3!
    • 1.Qg1+?
      • 1...Kd5
        • 2.Qg5#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Kxb4!
    • 1.e4?
      • threat
        • 2.Rc6#
      • 1...Sd4
        • 2.Qc3#
      • 1...Sc3
        • 2.Qf2#
        • 2.Qxc3#
        • 2.Qg1#
        • 2.Qe3#
      • 1...Sa7
        • 2.Qf2#
        • 2.Qc3#
        • 2.Qc1#
        • 2.Qg1#
        • 2.Qe3#
      • 1...Kxb6!
  • Keys
    • 1.Qg3!
      • 1...Kxb4
        • 2.Qc3#
      • 1...Kd5
        • 2.Qg5#
      • 1...Kxb6
        • 2.Qc7#
      • 1...Sd4
        • 2.Qe5#
        • 2.Qd6#
      • 1...Sa3
        • 2.Qe5#
        • 2.Qd6#
        • 2.Qg5#
      • 1...Sc3
        • 2.Qd6#
      • 1...Sd6
        • 2.Qe5#
        • 2.Qxd6#
      • 1...Sa7
        • 2.Qe5#
        • 2.Qd6#
        • 2.Qg5#
      • 1...Sc7
        • 2.Qd6#
      • 1...a5
        • 2.R6xb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD::R1(F),XS(a)
  • Tries
    • Try
      • Q(A);
      • Threat
        • R1(F)
      • Vars
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • K(b);P_SPINS(a),S_FLIGHT,XR(F)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
        • S(a);N_GUARD,P_SPINS(a)::QAB1(A),XS(a)
      • Refutation
        • K(b);P_SPINS(a),S_FLIGHT,XR(E)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::P(C)
        • K(b);OGATE,P_SPINS(a),S_FLIGHT,XR(F)::QAB1(A)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);
      • Vars
        • S(a);N_GUARD::QAB1(A),XS(a)
        • S(a);N_GUARD::QAB1(A)
      • Refutation
        • K(b);P_SPINS(a),S_FLIGHT,XR(F)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P_SPINS(a),S_FLIGHT,XR(E)::QAB1(A)
        • K(b);P-FLIGHT::QAR(A)
        • K(b);OGATE,P_SPINS(a),S_FLIGHT,XR(F)::QAB1(A)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR(A)
        • S(a);N_GUARD,P_SPINS(a)::QAB1(A),XS(a)
      • Refutation
        • K(b);P_SPINS(a),S_FLIGHT,XR(E)
    • Try
      • P(C);
      • Threat
        • R1(F)
      • Vars
        • S(a);N_GUARD::QAR2(A)
      • Refutation
        • K(b);P_SPINS(a),S_FLIGHT,XR(F)
  • Actual
    • Q(A);
    • Vars
      • K(b);P_SPINS(a),S_FLIGHT,XR(E)::QAB1(A)
      • K(b);P-FLIGHT::QAR(A)
      • K(b);P_SPINS(a),S_FLIGHT,XR(F)::QAB1(A)
      • S(a);N_GUARD::QAB1(A)
      • P(c);N_GUARD::R1(F),XS(a)
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