MESON Chess Problem Database

Problem Display
PID: 95366 (3K4/PN4p1/2N3P1/2Pk2P1/P4pP1/5R2/5P2/7B w - - 0 1)

Gruber, Hans

Sachsische Zeitung, 1978

3K4/PN4p1/2N3P1/2Pk2P1/P4pP1/5R2/5P2/7B

#2

12 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Re3#
    • 1...Kxc6
      • 2.Rxf4#
  • Tries
    • 1.Kd7?
      • threat
        • 2.Rxf4#
      • 1...Ke4
        • 2.Re3#
      • 1...Kc4!
    • 1.Rd3+?
      • 1...Ke6
        • 2.Bd5#
        • 2.Rd6#
      • 1...Kc4!
  • Keys
    • 1.a8S!
      • 1...Kc4
        • 2.Sb6#
      • 1...Ke4
        • 2.Re3#
      • 1...Kxc6
        • 2.Rxf4#
      • 1...Ke6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::B(A)+R(C),DCHECK
    • K(b);S_FLIGHT,XS(H)::B(A)+R(C),XP(a)
  • Tries
    • Try
      • K(L);P-FLIGHT
      • Threat
        • B(A)+R(C),XP(a)
      • Vars
        • K(b);S_FLIGHT::B(A)+R(C),DCHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(C);CHECK
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • P(J);
    • Vars
      • K(b);S_FLIGHT::S(J)
      • K(b);S_FLIGHT::B(A)+R(C),DCHECK
      • K(b);S_FLIGHT,XS(H)::B(A)+R(C),XP(a)
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