MESON Chess Problem Database

Problem Display
PID: 232598 (3RqB2/4b3/8/8/N1PPPP2/kP4R1/N7/K7 w - - 0 1)

Heyl, Peter

Freie Presse, 2008

3RqB2/4b3/8/8/N1PPPP2/kP4R1/N7/K7

#2

11 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bb4
      • 2.Bxb4#
    • 1...Bc5
      • 2.Bxc5#
    • 1...Bd6
      • 2.Bxd6#
  • Tries
    • 1.Sb6?
      • threat
        • 2.b4#
      • 1...Qg6
        • 2.Ra8#
      • 1...Qa4
        • 2.bxa4#
      • 1...Bb4
        • 2.Bxb4#
      • 1...Qh5!
    • 1.Rxe8?
      • threat
        • 2.Bxe7#
      • 1...Bb4
        • 2.Bxb4#
      • 1...Bc5
        • 2.Bxc5#
      • 1...Bd6
        • 2.Bxd6#
      • 1...Bxf8!
  • Keys
    • 1.Ra8!
      • threat
        • 2.b4#
      • 1...Qxa8
        • 2.Bxe7#
      • 1...Qh5
        • 2.Sc5#
      • 1...Qg6
        • 2.Sb6#
      • 1...Bb4
        • 2.Bxb4#

This is a version of 199374

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(b);OGATE::B(K),XB(b)
  • Tries
    • Try
      • S(E);
      • Threat
        • R(D)+P(C)
      • Vars
        • Q(c);N_GUARD::R(J)
        • Q(c);OGATE::R(D)+P(C),XQ(c)
        • B(b);OGATE::B(K),XB(b)
      • Refutation
        • Q(c);
    • Try
      • R(J);XQ(c)
      • Threat
        • B(K),XB(b)
      • Vars
        • B(b);OGATE::B(K),XB(b)
      • Refutation
        • B(b);N_SPINB(b),XB(K)
  • Actual
    • R(J);
    • Threat
      • R(D)+P(C)
    • Vars
      • Q(c);N_GUARD,XR(J)::B(K),XB(b)
      • Q(c);N_GUARD::R(J)+S(E)
      • B(b);OGATE::B(K),XB(b)
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