MESON Chess Problem Database

Problem Display
PID: 81894 (3K3R/8/1p2P1k1/R6N/3p1p1P/3N1P2/1Q1qP1r1/b2r4 w - - 0 1)

Eaton, Vincent Lanius

The Field, 1953

(First published on Thu Feb 19 1953)

3K3R/8/1p2P1k1/R6N/3p1p1P/3N1P2/1Q1qP1r1/b2r4

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Sdxf4#
    • 1...Qc3
      • 2.Sdxf4#
    • 1...Qb4
      • 2.Sdxf4#
    • 1...Qxb2
      • 2.Sdxf4#
    • 1...Qc2
      • 2.Sdxf4#
    • 1...Qxe2
      • 2.Sdxf4#
    • 1...Rxe2
      • 2.Rg5#
    • 1...Rf2
      • 2.Rg5#
    • 1...Rh2
      • 2.Rg5#
    • 1...Rg5
      • 2.Rxg5#
  • Tries
    • 1.Qc2?
      • threat
        • 2.Sdxf4#
        • 2.Se5#
      • 1...Qxc2
        • 2.Sdxf4#
      • 1...Qxd3!
    • 1.Qb5?
      • threat
        • 2.Qe8#
        • 2.Qf5#
      • 1...Qxa5
        • 2.Sdxf4#
      • 1...Qxd3
        • 2.Qe8#
      • 1...Rg5
        • 2.Qe8#
        • 2.Qxg5#
      • 1...bxa5!
  • Keys
    • 1.e4!
      • threat
        • 2.Se5#
      • 1...Qxa5
        • 2.Sdxf4#
      • 1...Qxd3
        • 2.Qxg2#
      • 1...dxe4 ep
        • 2.Sxf4#
      • 1...fxe4 ep
        • 2.Sdf4#
      • 1...Rg5
        • 2.Rxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 9
  • Sets
    • Q(c);N_GUARD::S(C),XP(f)
    • Q(c);N_GUARD,XQ(A)::S(C),XP(f)
    • Q(c);N_GUARD,XP(B)::S(C),XP(f)
    • R(d);N_GUARD,XP(B)::R1(F)
    • R(d);N_GUARD::R1(F)
    • R(d);N_GUARD::R1(F),XR(d)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);XQ(A)::S(C),XP(f)
      • Refutation
        • Q(c);P_SPINQ(c),XS(C)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);N_GUARD,XR(F)::S(C),XP(f)
        • Q(c);XS(C)::QAB(A)
      • Refutation
        • P(g);XR(F)
  • Actual
    • P(B);
    • Threat
      • S(C)
    • Vars
      • Q(c);N_GUARD,XR(F)::S(C),XP(f)
      • Q(c);OGATE,XS(C)::QAR(A),XR(d)
      • P(e);EP,P_PINS(C),S_CUTQ(c),XP(B)::S(G),XP(f)
      • P(f);EP,S_CUTQ(c),XP(B)::S(C)
      • R(d);N_GUARD::R1(F),XR(d)
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