MESON Chess Problem Database

Problem Display
PID: 271070 (8/8/2K2B2/8/B3kp2/7Q/R2b4/1b6 w - - 0 1)

Westbury, Eric Ernest

Reading Observer, 1902

8/8/2K2B2/8/B3kp2/7Q/R2b4/1b6

#2

5 + 4

17417 Westbury Scrapbooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Bxa2
      • 2.Bc2#
    • 1...Bc2
      • 2.Bxc2#
    • 1...Be1
      • 2.Re2#
    • 1...Bc3
      • 2.Re2#
    • 1...Bb4
      • 2.Re2#
    • 1...Ba5
      • 2.Re2#
  • Tries
    • 1.Rxd2?
      • threat
        • 2.Re2#
        • 2.Rd4#
      • 1...Bd3
        • 2.Qxd3#
      • 1...f3!
    • 1.Qe6+?
      • 1...Kd3
        • 2.Bb5#
      • 1...Kf3!
  • Keys
    • 1.Bd1!
      • 1...Bxa2
        • 2.Bc2#
      • 1...Be3
        • 2.Qh7#
      • 1...f3
        • 2.Qxf3#
      • 1...Bc2
        • 2.Bxc2#
      • 1...Bd3
        • 2.Qe6#
      • 1...Bc1
        • 2.Ra4#
      • 1...Be1
        • 2.Re2#
      • 1...Bc3
        • 2.Re2#
      • 1...Bb4
        • 2.Re2#
      • 1...Ba5
        • 2.Re2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD,XR(A)::B(C)
    • B(a);N_GUARD::B(C),XB(a)
    • B(b);OGATE::R(A)
  • Tries
    • Try
      • R(A);XB(b)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);N_GUARD::QAB1(B),XB(a)
      • Refutation
        • P(d);
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);N_GUARD,S_FLIGHT::B(C)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • B(C);
    • Vars
      • B(a);N_GUARD,XR(A)::B(C)
      • B(b);SBLOCK::QAB(B)
      • P(d);::QAB1(B),XP(d)
      • B(a);N_GUARD::B(C),XB(a)
      • B(a);SBLOCK::QAR2(B)
      • B(b);N_GUARD::R(A)
      • B(b);OGATE::R(A)
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