MESON Chess Problem Database

Problem Display
PID: 255 (6QB/4NK2/2RP4/2bBP3/3krp2/4r3/1PP5/1bN5 w - - 0 1)

Valve, Leo Erland

Suomen Shakki, 1950

6QB/4NK2/2RP4/2bBP3/3krp2/4r3/1PP5/1bN5

#2

11 + 6

17121 Encyclopedia of Chess Problems (Velimirovic/Valtonen) 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Ba3
      • 2.Rc4#
    • 1...Bb4
      • 2.Rc4#
    • 1...Bb6
      • 2.Rc4#
    • 1...Bxd6
      • 2.Rc4#
    • 1...Ba7
      • 2.Rc4#
  • Tries
    • 1.Qg1?
      • threat
        • 2.Se2#
        • 2.Sb3#
        • 2.c3#
      • 1...Ba2
        • 2.Se2#
        • 2.c3#
      • 1...Bb4
        • 2.Se2#
        • 2.Sb3#
        • 2.Rc4#
      • 1...f3
        • 2.Sb3#
        • 2.c3#
      • 1...Bxc2!
  • Keys
    • 1.Kf8!
      • threat
        • 2.Sf5#
      • 1...Bxd6
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • B(f);OGATE::R1(F)
    • B(f);OGATE,XP(G)::R1(F)
  • Tries
    • Try
      • Q(J);P_PINR(b)
      • Threat
        • DUALS(3)
      • Refutation
        • B(a);XP(C)
  • Actual
    • K(I);P-FLIGHT
    • Threat
      • S(H)
    • Vars
      • B(f);OGATE,P_PINS(H),XP(G)::R1(F)
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