MESON Chess Problem Database

Problem Display
PID: 6826 (5rnK/3pb2B/2p1pp1p/4k3/2P2R1P/4P1R1/7B/8 w - - 0 1)

Andersson, Gunnar

1st Prize, Vart Hem, 1933

5rnK/3pb2B/2p1pp1p/4k3/2P2R1P/4P1R1/7B/8

#2

8 + 9

3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6
      • 2.Re4#
    • 1...d6
      • 2.Re4#
  • Tries
    • 1.Rgg4?
      • threat
        • 2.Rf1#
        • 2.Rf2#
        • 2.Rf3#
        • 2.Rd4#
        • 2.Re4#
        • 2.Rf5#
      • 1...f5
        • 2.Rxf5#
      • 1...Kd6!
    • 1.Rg5+?
      • 1...Kd6
        • 2.Rd4#
        • 2.Rxf6#
      • 1...fxg5
        • 2.Rf7#
        • 2.Rxf8#
      • 1...hxg5
        • 2.Rf1#
        • 2.Rf2#
        • 2.Rf3#
        • 2.Rd4#
        • 2.Re4#
        • 2.Rg4#
      • 1...f5!
  • Keys
    • 1.Rxf6!
      • threat
        • 2.Rgf3#
      • 1...Bxf6+
        • 2.Rg7#
      • 1...Sxf6+
        • 2.Rg8#
      • 1...Kd6
        • 2.Rg5#
      • 1...Kxf6
        • 2.Rf3#
      • 1...Rxf6
        • 2.Rg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • B(g);SBLOCK::R1(E)
    • P(f);SBLOCK::R1(E)
  • Tries
    • Try
      • R(C);
      • Threat
        • DUALS(6)
      • Vars
        • P(d);::B(A)+R(E),DCHECK,XP(d)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);CHECK
      • Refutation
        • P(d);P_SPINP(d)
  • Actual
    • R(E);XP(d)
    • Threat
      • B(A)+R(C)
    • Vars
      • B(g);CHECK,SBLOCK,XR(E)::B(A)+R(C)
      • S(i);CHECK,SBLOCK,XR(E)::B(A)+R(C)
      • K(a);P_SPINP(c),S_FLIGHT::B(A)+R(C)
      • K(a);S_FLIGHT,XR(E)::R(C)
      • R(h);SBLOCK,XR(E)::B(A)+R(C),DCHECK
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