MESON Chess Problem Database

Problem Display
PID: 62954 (7B/Q7/1n1N4/2P1R3/1n1k4/7K/p1P5/8 w - - 0 1)

Taverner, Thomas

1st Prize, English Mechanic and World of Science, 1888

7B/Q7/1n1N4/2P1R3/1n1k4/7K/p1P5/8

#2

7 + 4

15 British Chess Magazine 1888
187 The Chess Bouquet 1897
3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Re2#
    • 1...Sc4
      • 2.Sb5#
    • 1...Sd5
      • 2.Re4#
    • 1...a1Q
      • 2.Qxa1#
    • 1...a1S
      • 2.Qxa1#
    • 1...a1B
      • 2.Qxa1#
    • 1...a1R
      • 2.Qxa1#
  • Tries
    • 1.Qa3?
      • threat
        • 2.Rf5#
        • 2.Rg5#
        • 2.Rh5#
        • 2.Qb2#
        • 2.Qe3#
      • 1...Sxc2
        • 2.Rf5#
        • 2.Rg5#
        • 2.Rh5#
      • 1...a1Q
        • 2.Rf5#
        • 2.Rg5#
        • 2.Rh5#
        • 2.Qxa1#
        • 2.Qe3#
      • 1...a1B
        • 2.Rf5#
        • 2.Rg5#
        • 2.Rh5#
        • 2.Qxa1#
        • 2.Qe3#
      • 1...Sd3
        • 2.Qxd3#
        • 2.c3#
      • 1...S4d5
        • 2.Re4#
      • 1...Sc6
        • 2.Qb2#
        • 2.Qd3#
        • 2.Qe3#
      • 1...Sa4
        • 2.Rf5#
        • 2.Rg5#
        • 2.Rh5#
        • 2.Qxb4#
        • 2.Qe3#
      • 1...Sc4
        • 2.Sb5#
        • 2.Sf5#
      • 1...Sd7
        • 2.Qb2#
        • 2.Qxb4#
        • 2.Qe3#
      • 1...S6d5!
  • Keys
    • 1.Qa5!
      • 1...Kc3
        • 2.Re2#
      • 1...Sxc2
        • 2.Qd2#
      • 1...a1Q
        • 2.Qxa1#
      • 1...a1S
        • 2.Qxa1#
      • 1...a1B
        • 2.Qxa1#
      • 1...a1R
        • 2.Qxa1#
      • 1...Sd3
        • 2.c3#
      • 1...S4d5
        • 2.Re4#
      • 1...Sa6
        • 2.Qd2#
      • 1...Sc6
        • 2.Qd2#
      • 1...Sa4
        • 2.Qxb4#
      • 1...Sc4
        • 2.Sb5#
      • 1...S6d5
        • 2.Re4#
      • 1...Sd7
        • 2.Qxb4#
      • 1...Sa8
        • 2.Qxb4#
      • 1...Sc8
        • 2.Qxb4#

This is a version of 253113

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::B(G)+R(D)
    • S(d);SBLOCK::S(E)
    • S(d);SBLOCK::B(G)+R(D),DCHECK
    • P(a);OGATE::QAB(F),XQ(a)
    • P(a);OGATE::QAB(F),XS(a)
    • P(a);OGATE::QAB(F),XB(a)
    • P(a);OGATE::QAB(F),XR(a)
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(5)
      • Vars
        • S(b);SBLOCK::B(G)+R(D),DCHECK
      • Refutation
        • S(d);
  • Actual
    • Q(F);
    • Vars
      • K(c);P_SPINS(b),S_FLIGHT::B(G)+R(D)
      • S(b);OGATE,XP(A)::QAR2(F)
      • P(a);OGATE::QAB(F),XQ(a)
      • P(a);OGATE::QAB(F),XS(a)
      • P(a);OGATE::QAB(F),XB(a)
      • P(a);OGATE::QAB(F),XR(a)
      • S(b);SBLOCK::P(A)
      • S(b);SBLOCK::B(G)+R(D),DCHECK
      • S(b);OGATE::QAR2(F)
      • S(d);N_GUARD::QAR2(F),XS(b)
      • S(d);SBLOCK::S(E)
      • S(d);SBLOCK::B(G)+R(D),DCHECK
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