MESON Chess Problem Database

Problem Display
PID: 246330 (2NK4/3B4/3NP3/1P1kp1P1/nP1P4/5b2/1b1Q4/8 w - - 0 1)

Casa, Alex

Europe Echecs, 1996

2NK4/3B4/3NP3/1P1kp1P1/nP1P4/5b2/1b1Q4/8

#2

10 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd4
      • 2.Qa2#
  • Tries
    • 1.Qe3?
      • threat
        • 2.Qxe5#
      • 1...Bxd4
        • 2.Qb3#
      • 1...exd4
        • 2.Bc6#
      • 1...Be4
        • 2.Qxe4#
      • 1...e4!
    • 1.Qe2?
      • threat
        • 2.Qc4#
        • 2.Qxe5#
      • 1...Kxd4
        • 2.Qd2#
      • 1...Bxd4
        • 2.Qc4#
        • 2.Qa2#
      • 1...exd4
        • 2.Bc6#
      • 1...Be4
        • 2.Qc4#
        • 2.Qxe4#
      • 1...Sb6
        • 2.Qxe5#
      • 1...e4
        • 2.Qc4#
      • 1...Bxe2!
    • 1.Qd3?
      • threat
        • 2.Qc4#
      • 1...exd4
        • 2.Qf5#
      • 1...Be2
        • 2.Qe4#
      • 1...Sb6!
  • Keys
    • 1.Qh2!
      • threat
        • 2.Qxe5#
      • 1...Kxd4
        • 2.Qd2#
      • 1...Bxd4
        • 2.Qa2#
      • 1...exd4
        • 2.Se7#
      • 1...e4
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(a);OGATE,P_SPINB(a),SBLOCK,XP(C)::QAB(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(e)
      • Vars
        • B(a);SBLOCK,XP(C)::QAB(A)
        • P(e);XP(C)::B(H)
        • B(b);N_GUARD::QAB1(A),XB(b)
      • Refutation
        • P(e);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(d);OGATEB,P-FLIGHT,XP(C)::QAR2(A)
        • P(e);SBLOCK,XP(C)::B(H)
        • S(c);::QAR1(A),XP(e)
        • P(e);::QAB1(A)
      • Refutation
        • B(b);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • P(e);OGATEB,P_SPINP(e),SBLOCK,XP(C)::QAR2(A)
        • B(b);N_GUARD::QAB1(A)
      • Refutation
        • S(c);
  • Actual
    • Q(A);
    • Threat
      • QAR1(A),XP(e)
    • Vars
      • K(d);OGATEB,P-FLIGHT,XP(C)::QAR2(A)
      • B(a);OGATE,SBLOCK,XP(C)::QAB(A)
      • P(e);SBLOCK,XP(C)::S(I)
      • P(e);::QAR1(A)
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