MESON Chess Problem Database

Problem Display
PID: 199374 (3RqB2/4p3/8/8/N1PPPP2/kP4R1/N7/K7 w - - 0 1)

Heyl, Peter

Freie Presse, 2001

(First published on Fri Aug 10 2001)

3RqB2/4p3/8/8/N1PPPP2/kP4R1/N7/K7

#2

11 + 3

16210 Problemschach-Jahrbuch (2001) 2002

SOLUTION

  • SOUND
  • Tries
    • 1.Sc5?
      • threat
        • 2.b4#
      • 1...Qa4
        • 2.bxa4#
      • 1...Qh5
        • 2.Ra8#
      • 1...Qg6!
    • 1.Sb6?
      • threat
        • 2.b4#
      • 1...Qg6
        • 2.Ra8#
      • 1...Qa4
        • 2.bxa4#
      • 1...Qh5!
  • Keys
    • 1.Ra8!
      • threat
        • 2.b4#
      • 1...Qxa8
        • 2.Bxe7#
      • 1...Qh5
        • 2.Sc5#
      • 1...Qg6
        • 2.Sb6#

There are these versions: 232598

FEATURES

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