MESON Chess Problem Database

Problem Display
PID: 214888 (2B5/8/8/2pk4/K3R3/4Q3/7b/8 w - - 0 1)

Carpenter, George Edward

St. Louis Globe Democrat, 1877

2B5/8/8/2pk4/K3R3/4Q3/7b/8

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6
      • 2.Bb7#
  • Tries
    • 1.Re5+?
      • 1...Kc4
        • 2.Ba6#
        • 2.Be6#
        • 2.Rxc5#
      • 1...Kc6
        • 2.Qxc5#
      • 1...Kd6
        • 2.Qxc5#
      • 1...Bxe5!
  • Keys
    • 1.Rc4!
      • threat
        • 2.Qxc5#
        • 2.Qe6#
      • 1...Kxc4
        • 2.Be6#
      • 1...Kc6
        • 2.Qxc5#
      • 1...Kd6
        • 2.Qxc5#
      • 1...Bg1
        • 2.Qe6#
      • 1...Be5
        • 2.Qxc5#
      • 1...Bd6
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK::B(D)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(A),XP(b)
        • K(c);P-FLIGHT::QAB1(A),XP(b)
      • Refutation
        • B(a);XR(C)
  • Actual
    • R(C);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);S_FLIGHT,XR(C)::B(D)
      • K(c);P_SPINP(b),S_FLIGHT::QAR1(A),XP(b)
      • K(c);P-FLIGHT::QAB1(A),XP(b)
      • B(a);::QAB1(A)
      • B(a);SBLOCK::QAR1(A),XP(b)
      • B(a);SBLOCK::QAB1(A)
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