MESON Chess Problem Database

Problem Display
PID: 18957 (7B/2P5/1PNk1r2/P4n1R/B1P1n1PQ/2P5/3N3K/4R3 w - - 0 1)

Barnes, Barry Peter

4th HM., The Problemist, 1959

7B/2P5/1PNk1r2/P4n1R/B1P1n1PQ/2P5/3N3K/4R3

#2

14 + 4

3147 Chess Problems: Introduction to an Art 1963
3749 FIDE Album (1959-1961) 1966
4199 Barnes about Chess Problems 2001
136 Problem Observer 2001

SOLUTION

  • SOUND
  • Tries
    • 1.Qxf6+?
      • 1...Kc5
        • 2.Rxf5#
        • 2.Qd4#
        • 2.Qe5#
      • 1...Kd7
        • 2.Sa7#
        • 2.Se7#
      • 1...Sxf6!
  • Keys
    • 1.Sd8!
      • 1...Kc5
        • 2.Sb7#
      • 1...Ke5
        • 2.Qg3#
      • 1...Ke7
        • 2.Qxf6#
      • 1...Sxd2
        • 2.Sb7#
      • 1...Sxc3
        • 2.Sb7#
      • 1...Sxh4
        • 2.c8S#
      • 1...Re6
        • 2.Sb7#
      • 1...Rg6
        • 2.Sxe4#
      • 1...Rh6
        • 2.Sxe4#
      • 1...Rf7
        • 2.Sxe4#
      • 1...Rf8
        • 2.Sxe4#
      • 1...Sf2
        • 2.Sb7#
      • 1...Seg3
        • 2.Sb7#
      • 1...Sc5
        • 2.c8S#
      • 1...Sg5
        • 2.Sb7#
      • 1...Se3
        • 2.c8S#
      • 1...Sfg3
        • 2.c8S#
      • 1...Sd4
        • 2.c8S#
      • 1...Sh6
        • 2.c8S#
      • 1...Se7
        • 2.Sxe4#
      • 1...Sg7
        • 2.c8S#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 21
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(H);CHECK,XR(d)
      • Refutation
        • S(a);XQ(H)
  • Actual
    • S(L);
    • Vars
      • K(c);P_SPINS(b),S_FLIGHT::S(L)
      • K(c);P_SPINR(d),P_SPINS(a),S_FLIGHT::QAB(H)
      • K(c);P_SPINR(d),P_SPINS(a),S_FLIGHT::QAB1(H),XR(d)
      • S(a);XS(B)::S(L)
      • S(a);XP(D)::S(L)
      • S(b);XQ(H)::P=S
      • R(d);SBLOCK::S(L)
      • R(d);::S(B),XS(a)
      • S(a);::S(L)
      • S(a);SBLOCK::P=S
      • S(b);::P=S
      • S(b);SBLOCK::S(B),XS(a)
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