MESON Chess Problem Database

Problem Display
PID: 146386 (2bN4/8/6nr/1R4n1/2Ppk2r/1K1N2qR/8/1B3QB1 w - - 0 1)

Lipton, Michael

The Problemist, 2012

2bN4/8/6nr/1R4n1/2Ppk2r/1K1N2qR/8/1B3QB1

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Qxe1#
    • 1...Qf4
      • 2.Sf2#
    • 1...Qe5
      • 2.Sc5#
    • 1...Qd6
      • 2.Qe2#
      • 2.Qe1#
    • 1...Qc7
      • 2.Qe2#
      • 2.Qe1#
    • 1...Qb8
      • 2.Qe2#
      • 2.Qe1#
    • 1...Qxd3+
      • 2.Bxd3#
    • 1...Bf5
      • 2.Qxf5#
    • 1...Ba6
      • 2.Qf5#
    • 1...Bb7
      • 2.Qf5#
    • 1...Sf3
      • 2.Qe2#
    • 1...Se6
      • 2.Qf5#
    • 1...Sf4
      • 2.Re5#
  • Tries
    • 1.Re5+?
      • 1...Qxe5
        • 2.Sc5#
      • 1...Sxe5!
  • Keys
    • 1.Sb7!
      • threat
        • 2.Sc5#
      • 1...Qxd3+
        • 2.Bxd3#
      • 1...Bxb7
        • 2.Qf5#
      • 1...Qf2
        • 2.Sd6#
      • 1...Qf4
        • 2.Sf2#
      • 1...Qe5
        • 2.Sdc5#
      • 1...Qd6
        • 2.Sxd6#
        • 2.Qe2#
        • 2.Qe1#
      • 1...Qc7
        • 2.Qe2#
        • 2.Qe1#
      • 1...Qf3
        • 2.Sd6#
      • 1...Rf4
        • 2.Sd6#
      • 1...Sf3
        • 2.Qe2#
      • 1...Se6
        • 2.Qf5#
      • 1...Sf4
        • 2.Re5#

This is a version of 6446

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(a);N_GUARD,N_PINS(E)::QAR(B),XQ(a)
    • Q(a);N_PINS(E),SBLOCK::B(A)+S(E),DCHECK
    • Q(a);CHECK,OGATE,P_SPINQ(a),XS(E)::B(A),XQ(a)
    • B(h);N_GUARD::QAB1(B),XB(h)
    • B(h);N_GUARD::QAB1(B)
    • S(e);N_PINS(E),S_CUTQ(a)::QAR2(B)
    • S(e);S_CUTB(h)::QAB1(B)
    • S(f);N_GUARD,S_CUTQ(a)::R1(H)
  • Tries
    • Try
      • R(H);CHECK
      • Vars
        • Q(a);N_PINS(E),SBLOCK,XR(H)::B(A)+S(E),DCHECK
      • Refutation
        • S(f);XR(H)
  • Actual
    • S(I);
    • Threat
      • S(I)
    • Vars
      • Q(a);CHECK,OGATE,P_SPINQ(a),XS(E)::B(A),XQ(a)
      • B(h);N_GUARD,XS(I)::QAB1(B)
      • Q(a);N_GUARD,N_PINS(E)::S(I)
      • Q(a);N_PINS(E),SBLOCK::B(A)+S(E),DCHECK
      • Q(a);N_GUARD::S(I)
      • R(d);S_CUTQ(a)::S(I)
      • S(e);N_PINS(E),S_CUTQ(a)::QAR2(B)
      • S(e);S_CUTB(h)::QAB1(B)
      • S(f);N_GUARD,S_CUTQ(a)::R1(H)
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