MESON Chess Problem Database

Problem Display
PID: 219927 (8/4R3/2N1rR2/3k4/4N3/3p4/K2P4/7Q w - - 0 1)

Laws, Benjamin Glover

The Field, 1884

(First published on Sat Nov 8 1884)

8/4R3/2N1rR2/3k4/4N3/3p4/K2P4/7Q

#2

7 + 3

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sc3+?
      • 1...Kc4
        • 2.Qd5#
      • 1...Kd6
        • 2.Qd5#
      • 1...Kc5!
    • 1.Qh5+?
      • 1...Kc4
        • 2.Qc5#
      • 1...Kxe4
        • 2.Rexe6#
        • 2.Qf3#
        • 2.Qh1#
        • 2.Qf5#
      • 1...Kxc6
        • 2.Rfxe6#
        • 2.Qc5#
      • 1...Re5!
  • Keys
    • 1.Qb1!
      • 1...Kc4
        • 2.Qb3#
      • 1...Kxe4
        • 2.Qh1#
      • 1...Kxc6
        • 2.Qb7#
      • 1...Rxe4
        • 2.Qb5#
      • 1...Rxc6
        • 2.Qxd3#
      • 1...Rxf6
        • 2.Qb5#
      • 1...Rxe7
        • 2.Qxd3#
      • 1...Re5
        • 2.Qxd3#
      • 1...Rd6
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
        • K(b);P-FLIGHT,P_SPINR(c)::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • R(c);P_SPINR(c)
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT::QAB1(A)
      • K(b);OGATEB,P_SPINP(a),P_SPINR(c),S_FLIGHT,XS(D)::QAB(A)
      • K(b);OGATEB,P_SPINR(c),S_FLIGHT,XS(E)::QAB1(A)
      • R(c);XS(D)::QAR2(A)
      • R(c);XS(E)::QAR2(A),XP(a)
      • R(c);XR(F)::QAR2(A)
      • R(c);XR(G)::QAR2(A),XP(a)
      • R(c);::QAR2(A),XP(a)
      • R(c);::QAR2(A)
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