MESON Chess Problem Database

Problem Display
PID: 245104 (1Q6/3Prp2/K1RN4/3pk3/4PN1P/4p3/5RbB/7B w - - 0 1)

Haring, Jacobus

De Maasbode, 1954

1Q6/3Prp2/K1RN4/3pk3/4PN1P/4p3/5RbB/7B

#2

11 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qb2#
    • 1...Kf6
      • 2.Se8#
      • 2.Qh8#
    • 1...Re6
      • 2.Se2#
    • 1...Bf1+
      • 2.Sb5#
    • 1...Bh3
      • 2.Sb5#
      • 2.Sf5#
    • 1...dxe4
      • 2.Qb2#
  • Tries
    • 1.Sd3+?
      • 1...Ke6
        • 2.Sc5#
      • 1...Kd4!
    • 1.Sg6+?
      • 1...Ke6
        • 2.Sf8#
      • 1...Kd4!
    • 1.Sxf7+?
      • 1...Kd4
        • 2.Qb4#
      • 1...Kxe4!
  • Keys
    • 1.exd5!
      • threat
        • 2.Qb2#
      • 1...Bf1+
        • 2.Se2#
      • 1...Kd4
        • 2.Qb2#
      • 1...Kf6
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • K(d);S_FLIGHT::QAB(K)
    • R(e);SBLOCK::B(C)+S(E)
    • B(a);CHECK::QAB(K)+S(I)
    • P(c);N_GUARD,XP(D)::QAB(K)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(d);P-FLIGHT::S(E)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(d);P-FLIGHT::S(E)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(I);CHECK,XP(f)
      • Vars
        • K(d);S_FLIGHT::QAR2(K)
      • Refutation
        • K(d);P-FLIGHT,P_SPINB(a),XP(D)
  • Actual
    • P(D);XP(c)
    • Threat
      • QAB(K)
    • Vars
      • B(a);CHECK::B(C)+S(E)
      • K(d);S_FLIGHT::QAB(K)
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