MESON Chess Problem Database

Problem Display
PID: 99791 (4r3/8/q4p2/B1p3pB/1R5p/2R5/2P1P2N/2KNk3 w - - 0 1)

Erokhin, Vladimir Alekseevich

Magyar Sakkszovetseg, 1979

4r3/8/q4p2/B1p3pB/1R5p/2R5/2P1P2N/2KNk3

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rf3?
      • threat
        • 2.Rf1#
      • 1...Kxe2
        • 2.Re3#
      • 1...Qxe2
        • 2.Re4#
      • 1...g4!
  • Keys
    • 1.Rg4!
      • threat
        • 2.Rg1#
      • 1...Kxe2
        • 2.Re4#
      • 1...Qxe2
        • 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
        • Q(e);N_GUARD,XP(D)::B(H)+R(G)
      • Refutation
        • P(d);
  • Actual
    • R(G);
    • Threat
      • R(G)
    • Vars
      • K(a);OGATEB,P-FLIGHT,XP(D)::B(I)+R(G),DCHECK
      • Q(e);N_GUARD,XP(D)::B(H)+R(F)
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