MESON Chess Problem Database

Problem Display
PID: 33007 (8/6N1/6b1/3R1qPp/4pk1b/Q3Np2/6PP/2BB3K w - - 0 1)

Pierce, William Timbrell

Source?, 0000

8/6N1/6b1/3R1qPp/4pk1b/Q3Np2/6PP/2BB3K

#2

10 + 7

3501 Chess Problems by Pierces 1873

SOLUTION

  • SOUND
  • Sets
    • 1...Qh3
      • 2.Qd6#
    • 1...Qg4
      • 2.Qd6#
    • 1...Qe6
      • 2.Sxe6#
    • 1...Qc8
      • 2.Qd6#
    • 1...Qxg5
      • 2.Se6#
    • 1...Qf7
      • 2.Qd6#
    • 1...Qf8
      • 2.Se6#
    • 1...Bxg5
      • 2.g3#
    • 1...Bf7
      • 2.Rxf5#
    • 1...Be8
      • 2.Rxf5#
    • 1...fxg2+
      • 2.Sxg2#
  • Tries
    • 1.Sf1+?
      • 1...Kg4
        • 2.h3#
      • 1...e3!
    • 1.Sexf5+?
      • 1...Kg4
        • 2.Sh6#
        • 2.h3#
      • 1...e3!
    • 1.Sxh5+?
      • 1...Bxh5
        • 2.Rxf5#
      • 1...Kxg5!
    • 1.Qd6+?
      • 1...Qe5
        • 2.Se6#
        • 2.Qxe5#
      • 1...Kxg5!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Se6#
      • 1...fxg2+
        • 2.Sxg2#
      • 1...Kxg5
        • 2.Se6#
      • 1...Bf7
        • 2.Rxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • Q(e);N_GUARD,P_PINP(E)::QAB(F)
    • Q(e);N_GUARD::QAB(F)
    • Q(e);N_GUARD::S(J),XQ(e)
    • Q(e);N_GUARD,XP(I)::S(J)
    • Q(e);N_GUARD::S(J)
    • B(d);N_GUARD,SBLOCK,XP(I)::P(D)
    • B(g);N_GUARD::R1(H),XQ(e)
    • P(a);CHECK,XP(D)::B(A)+S(G),DCHECK,XP(a)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINP(a)::P(E)
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • S(G);CHECK,XQ(e)
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • S(J);CHECK,XP(f)
      • Vars
        • B(g);XS(J)::R1(H),XQ(e)
      • Refutation
        • K(c);P_SPINQ(e),S_FLIGHT,XP(I)
    • Try
      • Q(F);CHECK
      • Refutation
        • K(c);P_SPINQ(e),S_FLIGHT,XP(I)
  • Actual
    • Q(F);P_PINQ(e)
    • Threat
      • S(J)
    • Vars
      • P(a);CHECK,XP(D)::B(A)+S(G),DCHECK,XP(a)
      • K(c);S_FLIGHT,XP(I)::S(J)
      • B(g);N_GUARD,N_SPINQ(e)::R1(H),XQ(e)
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