MESON Chess Problem Database

Problem Display
PID: 21162 (B3Q1b1/3p4/4qB2/5R2/8/4k2K/1R2pN2/8 w - - 0 1)

Westbury, Eric Ernest

2nd HM., Good Companions (May Meredith Ty.), 1917

B3Q1b1/3p4/4qB2/5R2/8/4k2K/1R2pN2/8

#2

7 + 5

3310 2345 Chess Problems 1997
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Qxe4#
    • 1...Qe5
      • 2.Qxe5#
    • 1...Qe7
      • 2.Rf3#
    • 1...Qxe8
      • 2.Rf3#
  • Tries
    • 1.Kg2?
      • threat
        • 2.Rf3#
      • 1...Qe5
        • 2.Qxe5#
      • 1...e1S+!
    • 1.Kg3?
      • threat
        • 2.Rf3#
      • 1...Qe5+
        • 2.Qxe5#
      • 1...e1S!
    • 1.Rd2?
      • threat
        • 2.Bg5#
        • 2.Rd3#
      • 1...e1Q
        • 2.Bg5#
      • 1...e1S
        • 2.Bg5#
      • 1...e1B
        • 2.Bg5#
      • 1...e1R
        • 2.Bg5#
      • 1...Kxd2!
    • 1.Qxe6+?
      • 1...dxe6
        • 2.Rf3#
      • 1...Bxe6!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qc5#
      • 1...Qxe7
        • 2.Rf3#
      • 1...Qe5
        • 2.Qxe5#
      • 1...Qe4
        • 2.Qxe4#
      • 1...d5
        • 2.Qa3#
      • 1...d6
        • 2.Qa7#

This anticipates 10744(1967)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(c);N_PINR(D),OGATE::QAR1(G),XQ(c)
    • Q(c);N_PINR(D),OGATE::QAR2(G),XQ(c)
    • Q(c);N_PINR(D)::R1(D)
    • Q(c);N_PINR(D),N_SPINQ(c),XQ(G)::R1(D)
  • Tries
    • Try
      • K(C);N_SPINR(D),S_FLIGHT
      • Threat
        • R1(D)
      • Vars
        • Q(c);OGATE::QAR2(G),XQ(c)
      • Refutation
        • P(a);CHECK
    • Try
      • K(C);N_SPINR(D),P-FLIGHT
      • Threat
        • R1(D)
      • Vars
        • Q(c);CHECK,OGATE::QAR2(G),XQ(c)
      • Refutation
        • P(a);
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);::B(E)
      • Refutation
        • K(b);N_SPINQ(c),S_FLIGHT,XR(A)
    • Try
      • Q(G);CHECK,N_SPINR(D),XQ(c)
      • Vars
        • P(d);XQ(G)::R1(D)
      • Refutation
        • B(e);P_PINR(D),XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAB(G)
    • Vars
      • Q(c);N_PINR(D),N_SPINQ(c),XQ(G)::R1(D)
      • Q(c);N_PINR(D),OGATE::QAR2(G),XQ(c)
      • Q(c);N_PINR(D),OGATE::QAR1(G),XQ(c)
      • P(d);::QAR(G)
      • P(d);OGATE::QAB(G)
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