MESON Chess Problem Database

Problem Display
PID: 259462 (3R1R2/8/2p5/4kP2/2P1P1P1/2K2bP1/5P2/8 w - - 0 1)

Cheylan, Yves

De Waarheid, 1978

3R1R2/8/2p5/4kP2/2P1P1P1/2K2bP1/5P2/8

#2

9 + 3

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Rde8#
      • 2.Rfe8#
    • 1...Bxe4
      • 2.f4#
  • Tries
    • 1.Rd4?
      • 1...Bxe4
        • 2.f4#
      • 1...Bxg4
        • 2.f4#
      • 1...Bd1
        • 2.f4#
      • 1...Bh1
        • 2.f4#
      • 1...Be2
        • 2.f4#
      • 1...Bg2
        • 2.f4#
      • 1...c5!
    • 1.Rd5+?
      • 1...Kxe4
        • 2.Re8#
      • 1...cxd5!
    • 1.Rd6?
      • threat
        • 2.Re6#
      • 1...Kxe4
        • 2.Re6#
        • 2.Re8#
      • 1...Kxd6!
    • 1.Rf6?
      • threat
        • 2.Re6#
      • 1...Kxe4
        • 2.Re6#
        • 2.Re8#
      • 1...Kxf6!
    • 1.g5?
      • threat
        • 2.Rfe8#
      • 1...Kxe4
        • 2.Rde8#
      • 1...Bxe4
        • 2.f4#
      • 1...Bh5!
  • Keys
    • 1.c5!
      • threat
        • 2.Rde8#
      • 1...Kxe4
        • 2.Rfe8#
      • 1...Bxe4
        • 2.f4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(a);OGATE,SBLOCK,XP(E)::P(A)
  • Tries
    • Try
      • R(H);
      • Vars
        • B(a);OGATE,XP(E)::P(A)
        • B(a);OGATE,XP(F)::P(A)
        • B(a);OGATE::P(A)
      • Refutation
        • P(c);
    • Try
      • R(H);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT,XP(E)::R(I)
      • Refutation
        • P(c);XR(H)
    • Try
      • R(H);
      • Threat
        • R1(H)
      • Refutation
        • K(b);S_FLIGHT,XR(H)
    • Try
      • R(I);
      • Threat
        • R1(I)
      • Refutation
        • K(b);S_FLIGHT,XR(I)
    • Try
      • P(F);
      • Threat
        • R(I)
      • Vars
        • K(b);N_GUARD,P-FLIGHT,XP(E)::R(H)
        • B(a);OGATE,SBLOCK,XP(E)::P(A)
      • Refutation
        • B(a);
  • Actual
    • P(D);
    • Threat
      • R(H)
    • Vars
      • K(b);N_GUARD,P-FLIGHT,XP(E)::R(I)
      • B(a);OGATE,SBLOCK,XP(E)::P(A)
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