MESON Chess Problem Database

Problem Display
PID: 101325 (3Q1bB1/8/2p5/Ppk2K2/1r1N4/8/1n6/8 w - - 0 1)

Beach, Lennox F

Good Companions, 1920

3Q1bB1/8/2p5/Ppk2K2/1r1N4/8/1n6/8

#2

5 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6
      • 2.Qb6#
    • 1...Sc4
      • 2.Se6#
  • Keys
    • 1.Ke4!
      • threat
        • 2.Qxf8#
      • 1...Rxd4+
        • 2.Qxd4#
      • 1...Bd6
        • 2.Qb6#
      • 1...Bh6
        • 2.Qe7#
      • 1...Be7
        • 2.Qxe7#
      • 1...Bg7
        • 2.Qe7#
      • 1...Sc4
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(f);SBLOCK::QAB1(D)
    • S(a);SBLOCK::S(A)
  • Actual
    • K(C);P_SPINS(A),S_FLIGHT
    • Threat
      • QAB(D),XB(f)
    • Vars
      • R(b);CHECK,OGATE,XS(A)::QAB1(D),XR(b)
      • B(f);SBLOCK::QAB1(D)
      • B(f);N_GUARD::QAB(D)
      • B(f);N_GUARD::QAB(D),XB(f)
      • S(a);N_PINS(A),SBLOCK::S(A)
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