MESON Chess Problem Database

Problem Display
PID: 48298 (1BB3b1/5p2/2PR2p1/2N1k3/7P/3K2n1/8/8 w - - 0 1)

Hess, Jean-Claude

National-Zeitung, 1945

1BB3b1/5p2/2PR2p1/2N1k3/7P/3K2n1/8/8

#2

7 + 5

3310 2345 Chess Problems 1997
5454 Near Snap 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Rf6#
    • 1...f6
      • 2.Rd4#
      • 2.Rd8#
  • Tries
    • 1.Rd7+?
      • 1...Kf5
        • 2.Rxf7#
      • 1...Kf6!
  • Keys
    • 1.Kc4!
      • threat
        • 2.Rxg6#
      • 1...f5+
        • 2.Re6#
      • 1...f6+
        • 2.Rd5#
      • 1...Kf4
        • 2.Rd3#
      • 1...Se4
        • 2.Sd3#
      • 1...Sf5
        • 2.Re6#
      • 1...g5
        • 2.Rg6#
        • 2.Rh6#

Anticipated by 40315(1935)

This anticipates 163393(2004)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::B(F)+R(E),DCHECK
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(b);P-FLIGHT::B(G)+R(E),DCHECK,XP(d)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • B(F)+R(E),XP(c)
    • Vars
      • P(d);CHECK,SBLOCK::B(F)+R(E),DCHECK
      • K(b);S_FLIGHT::B(F)+R(E)
      • S(a);SBLOCK::S(C)
      • S(a);SBLOCK::B(F)+R(E),DCHECK
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