MESON Chess Problem Database

Problem Display
PID: 136080 (1b6/5K2/8/3pNkN1/2P4P/3RPp2/8/Q7 w - - 0 1)

Agostini, Valerio

Guida, Marco

Mat Plus, 2010

1b6/5K2/8/3pNkN1/2P4P/3RPp2/8/Q7

#2

8 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Qb1?
      • threat
        • 2.Rxd5#
      • 1...Kxe5
        • 2.Rxd5#
      • 1...Bxe5
        • 2.Rd4#
      • 1...dxc4
        • 2.Rd5#
      • 1...d4!
    • 1.Qa6?
      • threat
        • 2.Qe6#
        • 2.Qf6#
      • 1...Kxe5
        • 2.Rxd5#
        • 2.Qe6#
        • 2.Qf6#
      • 1...Bxe5
        • 2.Qc8#
        • 2.Qe6#
      • 1...Bd6!
    • 1.e4+?
      • 1...Kf4
        • 2.Rxf3#
      • 1...dxe4!
  • Keys
    • 1.Rd4!
      • threat
        • 2.Rf4#
      • 1...Kxe5
        • 2.Rxd5#
      • 1...Bxe5
        • 2.Qb1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB(A)+R(B),XP(b)
      • Vars
        • K(c);P-FLIGHT,XS(F)::R1(B),XP(b)
        • B(d);SBLOCK,XS(F)::QAB(A)+R(B)
        • P(b);XP(D)::QAB(A)+R(B)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Refutation
        • B(d);
    • Try
      • P(C);CHECK
      • Vars
        • K(c);P-FLIGHT::R1(B),XP(a)
      • Refutation
        • P(b);XP(C)
  • Actual
    • R(B);
    • Threat
      • R1(B)
    • Vars
      • K(c);OGATEB,P-FLIGHT,XS(F)::QAB(A)+R(B),DCHECK,XP(b)
      • B(d);SBLOCK,XS(F)::QAB(A)
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