MESON Chess Problem Database

Problem Display
PID: 160797 (6K1/2Q5/4PpN1/3kr3/R1p5/4b3/2BP4/8 w - - 0 1)

Albaina, Alvaro Ignacio

Problemas, 1982

6K1/2Q5/4PpN1/3kr3/R1p5/4b3/2BP4/8

#2

7 + 5

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qxc4#
    • 1...Kxe6
      • 2.Qc6#
    • 1...Bd4
      • 2.Sf4#
    • 1...c3
      • 2.Bb3#
  • Tries
    • 1.Sf4+?
      • 1...Kd4
        • 2.Rxc4#
        • 2.Qxc4#
      • 1...Bxf4!
    • 1.Se7+?
      • 1...Kd4
        • 2.Rxc4#
        • 2.Qxc4#
      • 1...Kxe6!
    • 1.Ra5+?
      • 1...Kxe6
        • 2.Sf8#
        • 2.Qc6#
        • 2.Qe7#
      • 1...Bc5
        • 2.Qd7#
      • 1...Kd4!
    • 1.Qc6+?
      • 1...Kd4
        • 2.Rxc4#
        • 2.Qxc4#
      • 1...Kxc6!
  • Keys
    • 1.d4!
      • threat
        • 2.Qd7#
      • 1...Kxd4
        • 2.Qxc4#
      • 1...Kxe6
        • 2.Qc6#
      • 1...Rxe6
        • 2.Qc5#
      • 1...Bxd4
        • 2.Sf4#
      • 1...cxd4 ep
        • 2.Bb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(c);P-FLIGHT,P_SPINP(b)::QAR1(F),XP(b)
    • K(c);S_FLIGHT,XP(D)::QAR2(F)
    • B(a);N_GUARD,SBLOCK::S(E)
    • P(b);OGATEB::B(A)
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • B(a);XS(E)
    • Try
      • S(E);CHECK
      • Refutation
        • K(c);S_FLIGHT,XP(D)
    • Try
      • R(C);CHECK
      • Vars
        • B(a);P_SPINB(a)::QAR2(F)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(F);CHECK
      • Refutation
        • K(c);S_FLIGHT,XQ(F)
  • Actual
    • P(B);
    • Threat
      • QAR2(F)
    • Vars
      • K(c);P-FLIGHT,P_SPINP(b),XP(B)::QAR1(F),XP(b)
      • K(c);S_FLIGHT,XP(D)::QAR2(F)
      • R(d);SBLOCK,XP(D)::QAR1(F)
      • B(a);N_GUARD,SBLOCK,XP(B)::S(E)
      • P(b);EP,OGATEB,XP(B)::B(A)
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