MESON Chess Problem Database

Problem Display
PID: 229083 (B4N2/8/Q1Np2K1/3k4/1P1p4/Pp1pp1b1/8/2r5 w - - 0 1)

van Dijk, Johannes

Algemeen Handelsblad, 1926

B4N2/8/Q1Np2K1/3k4/1P1p4/Pp1pp1b1/8/2r5

#2

7 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Se7#
  • Tries
    • 1.Kf5?
      • threat
        • 2.Se7#
      • 1...Rxc6
        • 2.Bxc6#
        • 2.Qb5#
        • 2.Qxc6#
      • 1...Rf1+!
    • 1.Qb5+?
      • 1...Ke4
        • 2.Qf5#
      • 1...Rc5!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Qe6#
      • 1...Kc4
        • 2.Sa7#
      • 1...Ke4
        • 2.Qf5#
      • 1...Be5
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(e);SBLOCK::B(F)+S(D),DCHECK
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Threat
        • B(F)+S(D),DCHECK
      • Refutation
        • R(a);CHECK
    • Try
      • Q(C);CHECK
      • Vars
        • K(g);OGATE,S_FLIGHT::QAB1(C)
      • Refutation
        • R(a);P_SPINR(a)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • K(g);S_FLIGHT::QAR(C)+S(D)
      • K(g);S_FLIGHT::QAB1(C)
      • B(e);SBLOCK::B(F)+S(D),DCHECK
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