MESON Chess Problem Database

Problem Display
PID: 10142 (n2b4/R2Q4/1PN1pp2/P2N1p2/p1k5/Rb6/3Pp1B1/4K1B1 w - - 0 1)

Gooderson, Arthur R

18th Place, Match: Great Britain - Israel, 1962

n2b4/R2Q4/1PN1pp2/P2N1p2/p1k5/Rb6/3Pp1B1/4K1B1

#2

11 + 9

3207 A R Gooderson An English Progressive 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Se3#
    • 1...Kb5
      • 2.Se5#
    • 1...exd5
      • 2.Qxd5#
  • Tries
    • 1.Sc3?
      • threat
        • 2.Qd4#
      • 1...e5
        • 2.Qd5#
      • 1...Bxb6!
    • 1.Scb4?
      • threat
        • 2.Qc6#
        • 2.d3#
      • 1...Bxb6
        • 2.d3#
      • 1...Bc2
        • 2.Rc3#
        • 2.Qc6#
      • 1...Be7
        • 2.d3#
      • 1...exd5!
    • 1.Sd4?
      • threat
        • 2.Qb5#
      • 1...Kd3
        • 2.Qb5#
      • 1...Kc5
        • 2.Qc6#
      • 1...Sc7!
    • 1.Qc8?
      • threat
        • 2.Qa6#
      • 1...Kd3
        • 2.Scb4#
      • 1...Kb5
        • 2.Sd4#
      • 1...Sc7!
    • 1.d3+?
      • 1...Kb5
        • 2.Sc3#
        • 2.Scb4#
        • 2.Se5#
        • 2.Sce7#
        • 2.Sb8#
        • 2.Sxd8#
      • 1...Kxd3!
  • Keys
    • 1.Qxe6!
      • threat
        • 2.Qxe2#
      • 1...Kd3
        • 2.Sdb4#
      • 1...Kb5
        • 2.Sc3#
      • 1...Bc2
        • 2.Sc7#
      • 1...Bd1
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(d);P_SPINB(b),S_FLIGHT::QAR(K)+S(G)
    • K(d);S_FLIGHT::QAB(K)+S(I)
    • P(f);OGATE,XS(G)::QAB1(K),XP(f)
  • Tries
    • Try
      • S(G);
      • Threat
        • QAR1(K)
      • Vars
        • P(f);N_GUARD::QAB1(K)
      • Refutation
        • B(i);XP(H)
    • Try
      • S(I);
      • Threat
        • DUALS(2)
      • Vars
        • B(i);XP(H)::P(C)
        • B(i);::P(C)
      • Refutation
        • P(f);XS(G)
    • Try
      • S(I);
      • Threat
        • QAB1(K)
      • Vars
        • K(d);P_SPINB(b),S_FLIGHT::QAB(K)
        • K(d);P-FLIGHT::QAR1(K)
      • Refutation
        • S(h);
    • Try
      • Q(K);
      • Threat
        • QAB(K)
      • Vars
        • K(d);P_SPINB(b),S_FLIGHT::S(I)
        • K(d);S_FLIGHT::S(I)
      • Refutation
        • S(h);
    • Try
      • P(C);CHECK
      • Refutation
        • K(d);P_SPINB(b),S_FLIGHT,XP(C)
  • Actual
    • Q(K);XP(f)
    • Threat
      • QAB(K),XP(a)
    • Vars
      • K(d);P_SPINB(b),S_FLIGHT::S(G)
      • K(d);S_FLIGHT::S(G)
      • B(b);::QAB(K)+S(G)
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