MESON Chess Problem Database

Problem Display
PID: 81093 (2N4Q/8/2p1p3/2k2r2/K2p4/8/B1n1N2b/8 w - - 0 1)

Barron, Philip

The Field, 1950

(First published on Sat Aug 19 1950)

2N4Q/8/2p1p3/2k2r2/K2p4/8/B1n1N2b/8

#2

5 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.Qe5#
    • 1...Re5
      • 2.Qf8#
    • 1...Sa1
      • 2.Qxd4#
    • 1...Se1
      • 2.Qxd4#
    • 1...Sa3
      • 2.Qxd4#
    • 1...Se3
      • 2.Qxd4#
    • 1...Sb4
      • 2.Qxd4#
    • 1...d3
      • 2.Qc3#
  • Tries
    • 1.Sg3?
      • threat
        • 2.Se4#
      • 1...Rf4
        • 2.Qe5#
      • 1...Re5
        • 2.Qxe5#
        • 2.Qf8#
      • 1...Bxg3!
    • 1.Sf4?
      • threat
        • 2.Sd3#
        • 2.Sxe6#
      • 1...Rxf4
        • 2.Qe5#
      • 1...Re5
        • 2.Sd3#
        • 2.Qxe5#
        • 2.Qf8#
      • 1...Rf6
        • 2.Sd3#
      • 1...Se1
        • 2.Sxe6#
      • 1...Sb4
        • 2.Sxe6#
      • 1...d3
        • 2.Sxd3#
        • 2.Sxe6#
        • 2.Qc3#
      • 1...e5
        • 2.Sd3#
        • 2.Se6#
      • 1...Bxf4!
    • 1.Qd8?
      • threat
        • 2.Qa5#
        • 2.Qb6#
      • 1...Sa3
        • 2.Qb6#
        • 2.Qxd4#
      • 1...Bc7!
    • 1.Qf8+?
      • 1...Bd6
        • 2.Qxd6#
      • 1...Rxf8!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Se4#
      • 1...dxc3
        • 2.Qxc3#
      • 1...Rf4
        • 2.Qe5#
      • 1...Re5
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • R(e);N_GUARD,S_CUTB(b)::QAR2(E)
    • R(e);N_GUARD,S_CUTB(b)::QAB(E)
    • S(a);N_GUARD::QAB1(E),XP(c)
    • P(c);OGATE::QAR2(E)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • R(e);N_GUARD::QAR2(E)
      • Refutation
        • B(b);XS(B)
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);N_GUARD,XS(B)::QAR2(E)
        • R(e);::S(B)
        • S(a);::S(B),XP(g)
      • Refutation
        • B(b);XS(B)
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Refutation
        • B(b);
    • Try
      • Q(E);CHECK
      • Vars
        • B(b);N_GUARD,P_SPINB(b)::QAB1(E),XB(b)
      • Refutation
        • R(e);XQ(E)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • P(c);OGATE,XS(B)::QAR2(E),XP(c)
      • R(e);N_GUARD,S_CUTB(b)::QAR2(E)
      • R(e);N_GUARD,S_CUTB(b)::QAB(E)
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