MESON Chess Problem Database

Problem Display
PID: 246449 (4B1N1/4P2p/Np1k2rR/p2ppPB1/2P5/8/6R1/6K1 w - - 0 1)

Petite, Efren

Europe Echecs, 1991

4B1N1/4P2p/Np1k2rR/p2ppPB1/2P5/8/6R1/6K1

#2

10 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re6
      • 2.Rxe6#
    • 1...Rf6
      • 2.Rxf6#
    • 1...dxc4
      • 2.Rd2#
    • 1...e4
      • 2.Bf4#
    • 1...b5
      • 2.c5#
  • Tries
    • 1.Bc1?
      • threat
        • 2.Ba3#
      • 1...e4
        • 2.Bf4#
      • 1...b5
        • 2.c5#
      • 1...dxc4!
    • 1.Ba4?
      • threat
        • 2.e8S#
      • 1...dxc4
        • 2.Rd2#
      • 1...e4
        • 2.Bf4#
      • 1...b5!
    • 1.Rb2?
      • threat
        • 2.Rxb6#
      • 1...dxc4
        • 2.Rd2#
      • 1...b5
        • 2.c5#
      • 1...e4!
  • Keys
    • 1.Bb5!
      • threat
        • 2.e8S#
      • 1...dxc4
        • 2.Rd2#
      • 1...e4
        • 2.Bf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • R(f);OGATE::R1(G),XR(f)
    • R(f);OGATE::R(G),XR(f)
    • P(b);OGATEB,XP(C)::R(B)
    • P(c);OGATEB::B(E)
    • P(d);N_GUARD::P(C)
  • Tries
    • Try
      • B(E);P_SPINR(B)
      • Threat
        • B(E)
      • Vars
        • P(c);OGATEB::B(E)
        • P(d);N_GUARD::P(C)
      • Refutation
        • P(b);XP(C)
    • Try
      • B(I);
      • Threat
        • P=S
      • Vars
        • P(b);OGATEB,XP(C)::R(B)
        • P(c);OGATEB::B(E)
      • Refutation
        • P(d);
    • Try
      • R(B);P_SPINB(E)
      • Threat
        • R(B),XP(d)
      • Vars
        • P(b);XP(C)::R(B)
        • P(d);N_GUARD::P(C)
      • Refutation
        • P(c);
  • Actual
    • B(I);
    • Threat
      • P=S
    • Vars
      • P(b);OGATEB,XP(C)::R(B)
      • P(c);OGATEB::B(E)
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