MESON Chess Problem Database

Problem Display
PID: 234661 (2Bb4/1r6/k7/8/1Q6/8/1B6/1K6 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2008

2Bb4/1r6/k7/8/1Q6/8/1B6/1K6

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ka7
      • 2.Qxb7#
    • 1...Ba5
      • 2.Qxb7#
  • Tries
    • 1.Bc3?
      • threat
        • 2.Qxb7#
      • 1...Ka7
        • 2.Qxb7#
      • 1...Bb6!
    • 1.Qb5+?
      • 1...Ka7
        • 2.Qxb7#
      • 1...Kxb5!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Bxb7#
      • 1...Bb6
        • 2.Qxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • K(a);N_SPINR(b),P-FLIGHT::QAR1(C),XR(b)
    • B(c);SBLOCK::QAB1(C),XR(b)
  • Tries
    • Try
      • B(B);P_SPINQ(C)
      • Threat
        • QAB1(C),XR(b)
      • Vars
        • K(a);N_SPINR(b),P-FLIGHT::QAR1(C),XR(b)
      • Refutation
        • B(c);N_PINQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);N_SPINR(b),P-FLIGHT::QAR1(C),XR(b)
      • Refutation
        • K(a);N_SPINR(b),S_FLIGHT,XQ(C)
  • Actual
    • B(B);P_SPINQ(C)
    • Threat
      • B(D),XR(b)
    • Vars
      • B(c);N_GUARD,N_PINQ(C)::QAR1(C),XB(c)
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