MESON Chess Problem Database

Problem Display
PID: 156286 (5R2/1q3N2/6n1/3bB1P1/r5p1/1Q1B1kP1/4RP2/b6K w - - 0 1)

Lipton, Michael

The Problemist, 2014

5R2/1q3N2/6n1/3bB1P1/r5p1/1Q1B1kP1/4RP2/b6K

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe5
      • 2.Sxe5#
    • 1...Sxe5
      • 2.Sxe5#
  • Tries
    • 1.Bc4+?
      • 1...Bc3
        • 2.Qxc3#
      • 1...Qxb3!
    • 1.Bb5+?
      • 1...Bc3
        • 2.Qxc3#
      • 1...Bxb3!
    • 1.Bb2?
      • threat
        • 2.Se5#
      • 1...Qxf7
        • 2.Bc4#
      • 1...Bxf7
        • 2.Bb5#
      • 1...Se5
        • 2.Sxe5#
      • 1...Rf4!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Se5#
      • 1...Qxf7
        • 2.Qxd5#
      • 1...Bxf7
        • 2.Qxb7#
      • 1...Se5
        • 2.Sxe5#

This is after

After Gulyaev.

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(a);XB(G)::R(J)+S(I),DCHECK,XB(a)
    • S(f);XB(G)::R(J)+S(I),DCHECK,XS(f)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR(D),XB(a)
      • Refutation
        • Q(g);XQ(D)
    • Try
      • B(E);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR(D),XB(a)
      • Refutation
        • B(e);XQ(D)
    • Try
      • B(G);
      • Threat
        • R(J)+S(I),DCHECK
      • Vars
        • Q(g);N_GUARD,P_SPINQ(g),XS(I)::QAR(D)+B(E)
        • B(e);N_GUARD,P_SPINB(e),XS(I)::QAR(D)+B(E)
        • S(f);::R(J)+S(I),DCHECK,XS(f)
      • Refutation
        • R(c);
  • Actual
    • B(G);
    • Threat
      • R(J)+S(I),DCHECK
    • Vars
      • Q(g);N_GUARD,P_SPINQ(g),XS(I)::QAB(D),XB(e)
      • B(e);OGATEB,P_SPINB(e),XS(I)::QAB(D),XQ(g)
      • S(f);::R(J)+S(I),DCHECK,XS(f)
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