MESON Chess Problem Database

Problem Display
PID: 15782 (3N1R2/5pqB/3Qp1rB/R2b4/3Pk2n/b1P1N2K/4PPn1/8 w - - 0 1)

Saunders, Denis M

The Problemist, 1987

3N1R2/5pqB/3Qp1rB/R2b4/3Pk2n/b1P1N2K/4PPn1/8

#2

12 + 9

3936 The Wizard of Oz 1999
6388 ChessMoves 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Qxe5#
    • 1...Qxh6
      • 2.Qe5#
    • 1...Qxf8
      • 2.Qe5#
    • 1...Qxh7
      • 2.Qe5#
    • 1...Qg8
      • 2.Qe5#
    • 1...Bc6
      • 2.Qxc6#
    • 1...Se1
      • 2.Qf4#
    • 1...Sxe3
      • 2.Qf4#
    • 1...Sf4+
      • 2.Qxf4#
    • 1...Sf5
      • 2.f3#
    • 1...e5
      • 2.Qxd5#
  • Tries
    • 1.Sf1?
      • threat
        • 2.Sg3#
      • 1...Sf4+
        • 2.Qxf4#
      • 1...Kf5
        • 2.Qxe6#
      • 1...Qxh7
        • 2.Qe5#
      • 1...Qe5
        • 2.Qxe5#
      • 1...Sf5
        • 2.Sd2#
        • 2.f3#
      • 1...f5
        • 2.Sd2#
      • 1...Bxd6!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sg3#
      • 1...Rg3+
        • 2.Sxg3#
      • 1...Sf4+
        • 2.Qxf4#
      • 1...Kxf5
        • 2.Qxe6#
      • 1...Qxh7
        • 2.Qe5#
      • 1...Bxd6
        • 2.Sxd6#
      • 1...Sxf5
        • 2.f3#
      • 1...exf5
        • 2.Qxd5#
      • 1...Qe5
        • 2.Qxe5#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • Q(i);N_GUARD::QAR1(H),XQ(i)
    • Q(i);N_GUARD,XB(I)::QAR1(H)
    • Q(i);N_GUARD,XR(L)::QAR1(H)
    • Q(i);N_GUARD,N_SPINR(g),XB(J)::QAR1(H)
    • Q(i);N_GUARD::QAR1(H)
    • B(e);OGATEB::QAB(H),XB(e)
    • S(a);N_GUARD::QAR1(H)
    • S(a);N_GUARD,XS(D)::QAR1(H)
    • S(a);CHECK,N_GUARD::QAR1(H),XS(a)
    • S(d);N_GUARD,N_SPINR(g)::P(B)
    • P(f);N_GUARD::QAB1(H),XB(e)
  • Tries
    • Try
      • S(D);
      • Threat
        • S(D)
      • Vars
        • S(a);CHECK,N_GUARD::QAR1(H),XS(a)
        • K(c);P_SPINB(e),P_SPINP(h),S_FLIGHT::QAB1(H),XP(f)
        • Q(i);N_GUARD,N_SPINR(g),XB(J)::QAR1(H)
        • Q(i);N_GUARD::QAR1(H),XQ(i)
        • P(h);N_SPINR(g)::S(D)
      • Refutation
        • B(b);XQ(H)
  • Actual
    • S(D);N_PINR(g)
    • Threat
      • S(D)
    • Vars
      • R(g);CHECK::B(J)+S(D),DCHECK,XR(g)
      • S(a);CHECK,N_GUARD::QAR1(H),XS(a)
      • K(c);P_SPINB(e),P_SPINP(h),P_SPINR(g),S_FLIGHT,XS(D)::QAB1(H),XP(f)
      • Q(i);N_GUARD,XB(J)::QAR1(H)
      • B(b);XQ(H)::S(D),XB(b)
      • S(d);N_GUARD,SBLOCK,XS(D)::P(B)
      • P(f);N_GUARD,XS(D)::QAB1(H),XB(e)
      • Q(i);N_GUARD::QAR1(H),XQ(i)
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