MESON Chess Problem Database

Problem Display
PID: 61858 (5Rb1/KN2p2r/2Bp3p/1p1p4/4kpP1/5p2/3R1P2/B3N3 w - - 0 1)

Poisson, Christian

diagrammes, 1990

5Rb1/KN2p2r/2Bp3p/1p1p4/4kpP1/5p2/3R1P2/B3N3

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rf7
      • 2.Bxd5#
  • Tries
    • 1.Bg7?
      • threat
        • 2.Rd4#
      • 1...e5
        • 2.Sxd6#
      • 1...Rxg7!
    • 1.Rxd5?
      • threat
        • 2.Re5#
      • 1...e5
        • 2.Rd4#
        • 2.Rxe5#
      • 1...Bxd5!
    • 1.Rf7?
      • threat
        • 2.Bxd5#
      • 1...e6
        • 2.Sxd6#
      • 1...Bxf7!
    • 1.Re8?
      • threat
        • 2.Sxd6#
      • 1...e5
        • 2.Rd4#
      • 1...e6
        • 2.Bxd5#
      • 1...Be6!
  • Keys
    • 1.Rb2!
      • threat
        • 2.Rb4#
      • 1...Kd4
        • 2.Rb4#
      • 1...Ke5
        • 2.Re2#
      • 1...b4
        • 2.Rxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(i);S_CUTB(j)::B(F),XP(e)
  • Tries
    • Try
      • B(A);
      • Threat
        • R1(C)
      • Vars
        • P(h);N_GUARD::S(H),XP(f)
      • Refutation
        • R(i);XB(A)
    • Try
      • R(C);XP(e)
      • Threat
        • B(F)+R(C),DCHECK
      • Refutation
        • B(j);P_SPINB(j),XR(C)
    • Try
      • R(I);
      • Threat
        • B(F),XP(e)
      • Vars
        • P(h);N_GUARD::S(H),XP(f)
      • Refutation
        • B(j);XR(I)
    • Try
      • R(I);
      • Threat
        • S(H),XP(f)
      • Vars
        • P(h);P_PINS(H)::R1(C)
        • P(h);P_PINS(H),S_CUTB(j)::B(F),XP(e)
      • Refutation
        • B(j);
  • Actual
    • R(C);
    • Threat
      • R(C)
    • Vars
      • K(b);N_SPINP(e),P-FLIGHT::B(A)+R(C),DCHECK
      • P(d);::R(C),XP(d)
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