MESON Chess Problem Database

Problem Display
PID: 4829 (K7/1Q3B2/3pn3/8/1Bk1bR2/1Nn5/2P5/8 w - - 0 1)

Heathcote, Godfrey

English Mechanic and World of Science, 1892

K7/1Q3B2/3pn3/8/1Bk1bR2/1Nn5/2P5/8

#2

7 + 5

3310 2345 Chess Problems 1997
3713 Snap 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Rxe4#
    • 1...Sd1
      • 2.Rxe4#
    • 1...Sa2
      • 2.Rxe4#
    • 1...Sa4
      • 2.Rxe4#
  • Tries
    • 1.Bxc3?
      • threat
        • 2.Qc6#
      • 1...d5
        • 2.Qb4#
      • 1...Kxc3!
    • 1.Bxe6+?
      • 1...Sd5
        • 2.Bxd5#
        • 2.Rxe4#
      • 1...d5!
  • Keys
    • 1.Ba5!
      • threat
        • 2.Qc6#
      • 1...Sa4
        • 2.Rxe4#
      • 1...Sd5
        • 2.Qa6#
      • 1...d5
        • 2.Qb4#

This anticipates 6076(1926)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(a);N_GUARD::R(D),XB(c)
  • Tries
    • Try
      • B(C);XS(a)
      • Threat
        • QAR2(E)
      • Vars
        • P(d);N_PINQ(E),N_SPINS(e),SBLOCK::QAR1(E)
      • Refutation
        • K(b);N_SPINB(c),N_SPINS(e),P-FLIGHT,XB(C)
    • Try
      • B(F);CHECK,XS(e)
      • Refutation
        • P(d);N_PINQ(E),P_SPINP(d)
  • Actual
    • B(C);
    • Threat
      • QAR2(E)
    • Vars
      • S(a);N_GUARD::R(D),XB(c)
      • S(a);N_PINQ(E),N_SPINS(e),SBLOCK::QAB(E)
      • P(d);N_PINQ(E),N_SPINS(e),SBLOCK::QAR1(E)
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