MESON Chess Problem Database

Problem Display
PID: 177540 (5rn1/2B4B/1Q1R2R1/3b4/2p1P2p/5k1p/5N2/5K2 w - - 0 1)

Haring, Jacobus

Postsjakk, 1960

5rn1/2B4B/1Q1R2R1/3b4/2p1P2p/5k1p/5N2/5K2

#2

8 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Rdf6#
  • Tries
    • 1.Rg3+?
      • 1...Kxg3
        • 2.Rf6#
      • 1...Kf4
        • 2.Rxd5#
        • 2.Rc6#
        • 2.Re6#
        • 2.Rf6#
        • 2.Rdg6#
        • 2.Rh6#
        • 2.Rd7#
        • 2.Rd8#
      • 1...hxg3!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Qe3#
      • 1...Kg3+
        • 2.Rdf6#
      • 1...Kxe4+
        • 2.Rgf6#
      • 1...Kf4
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::B(G)+R(E),DCHECK
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(a);P-FLIGHT,P_PINS(B),XR(F)::B(G)+R(E)
      • Refutation
        • P(d);XR(F)
  • Actual
    • S(B);
    • Threat
      • QAR1(D)
    • Vars
      • K(a);CHECK,P-FLIGHT::B(G)+R(E)
      • K(a);CHECK,S_FLIGHT,XP(C)::B(H)+R(F)
      • K(a);P-FLIGHT::QAB1(D)
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