MESON Chess Problem Database

Problem Display
PID: 65702 (8/8/7n/4Q3/8/8/3NpkP1/2B3NK w - - 0 1)

Leschemelle, Matthieu

HM., Phenix, 1996

8/8/7n/4Q3/8/8/3NpkP1/2B3NK

#2

6 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ke1
      • 2.Qxe2#
    • 1...e1Q
      • 2.Qf4#
    • 1...e1S
      • 2.Sh3#
    • 1...e1B
      • 2.Sh3#
      • 2.Qf4#
    • 1...e1R
      • 2.Qf4#
  • Tries
    • 1.Kh2?
      • threat
        • 2.Qg3#
        • 2.Qxe2#
      • 1...Ke1
        • 2.Qxe2#
      • 1...e1Q
        • 2.Sh3#
        • 2.Qg3#
        • 2.Qf4#
      • 1...e1S
        • 2.Sh3#
        • 2.Qg3#
        • 2.Qd4#
        • 2.Qe2#
        • 2.Qc5#
      • 1...e1B
        • 2.Sh3#
        • 2.Qg3#
        • 2.Qd4#
        • 2.Qf4#
        • 2.Qe2#
        • 2.Qc5#
      • 1...e1R
        • 2.Sh3#
        • 2.Qg3#
        • 2.Qf4#
      • 1...Sf5
        • 2.Qxe2#
      • 1...Sg4+!
    • 1.Qd4+?
      • 1...Kg3
        • 2.Sxe2#
      • 1...Ke1!
    • 1.Qe3+?
      • 1...Ke1
        • 2.Qxe2#
      • 1...Kxe3!
  • Keys
    • 1.Sf1!
      • threat
        • 2.Qxe2#
      • 1...Ke1
        • 2.Qxe2#
      • 1...Kxf1
        • 2.Qxe2#
      • 1...exf1Q
        • 2.Qe3#
      • 1...exf1S
        • 2.Sh3#
      • 1...exf1B
        • 2.Sh3#
        • 2.Qe3#
      • 1...exf1R
        • 2.Qe3#
      • 1...e1Q
        • 2.Qf4#
      • 1...e1S
        • 2.Qe2#
      • 1...e1B
        • 2.Qf4#
        • 2.Qe2#
      • 1...e1R
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(b);P_SPINP(a),S_FLIGHT::QAR1(F),XP(a)
    • P(a);P_PINS(B),SBLOCK::QAR2(F)
    • P(a);::S(B)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAR1(F),XP(a)
        • S(c);::QAR1(F),XP(a)
      • Refutation
        • S(c);CHECK
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);S_FLIGHT::S(B),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAR1(F),XP(a)
      • Refutation
        • K(b);S_FLIGHT,XQ(F)
  • Actual
    • S(D);
    • Threat
      • QAR1(F),XP(a)
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::QAR1(F),XP(a)
      • K(b);P-FLIGHT,XS(D)::QAB1(F),XP(a)
      • P(a);P_PINS(B),SBLOCK,XS(D)::QAB1(F)
      • P(a);SBLOCK,XS(D)::S(B)
      • P(a);SBLOCK::QAR2(F)
      • P(a);::QAR1(F)
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