MESON Chess Problem Database

Problem Display
PID: 182311 (3K4/8/3Nk2p/3pP1p1/8/8/B1PP3Q/4r3 w - - 0 1)

van Dijk, Johannes

Oprechte Haarlemsche Courant, 1906

3K4/8/3Nk2p/3pP1p1/8/8/B1PP3Q/4r3

#2

7 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe5
      • 2.Qxh6#
  • Tries
    • 1.Qh5?
      • threat
        • 2.Qe8#
      • 1...Rxe5
        • 2.Qg6#
        • 2.Qxh6#
      • 1...Kxe5!
  • Keys
    • 1.c4!
      • threat
        • 2.cxd5#
      • 1...Rxe5
        • 2.Qxh6#
      • 1...dxc4
        • 2.Bxc4#
      • 1...d4
        • 2.c5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(a);SBLOCK,XP(E)::QAR(D),XP(e)
  • Tries
    • Try
      • Q(D);
      • Threat
        • QAR2(D)
      • Refutation
        • K(d);N_SPINP(b),P-FLIGHT,P_SPINP(c),XP(E)
  • Actual
    • P(B);N_PINP(b)
    • Threat
      • P(B),XP(b)
    • Vars
      • R(a);SBLOCK,XP(E)::QAR(D),XP(e)
      • P(b);OGATE,P_SPINP(b),XP(B)::B(A),XP(b)
      • P(b);::B(A)+P(B)
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