MESON Chess Problem Database

Problem Display
PID: 162128 (4r3/2n2p2/r7/B5pB/1R5p/2R5/2P1P2N/2KNk3 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Schakend Nederland, 1986

4r3/2n2p2/r7/B5pB/1R5p/2R5/2P1P2N/2KNk3

#2

9 + 7

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Rf3?
      • threat
        • 2.Rf1#
      • 1...Kxe2
        • 2.Re3#
      • 1...Rf6
        • 2.Re4#
      • 1...g4!
    • 1.e4?
      • threat
        • 2.Re3#
      • 1...Rxe4
        • 2.Rxe4#
      • 1...Sd5!
  • Keys
    • 1.Rg4!
      • threat
        • 2.Rg1#
      • 1...Kxe2
        • 2.Re4#
      • 1...Rf6
        • 2.Re3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);
      • Threat
        • R1(F)
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(D)::B(I)+R(F),DCHECK
        • R(d);N_GUARD::B(H)+R(G)
      • Refutation
        • P(c);
    • Try
      • P(D);
      • Threat
        • R(F)
      • Vars
        • R(g);OGATE,XP(D)::R(G),XR(g)
      • Refutation
        • S(e);
  • Actual
    • R(G);
    • Threat
      • R(G)
    • Vars
      • K(a);OGATEB,P-FLIGHT,XP(D)::B(I)+R(G),DCHECK
      • R(d);N_GUARD::B(H)+R(F)
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