MESON Chess Problem Database

Problem Display
PID: 106895 (3N4/KB2pp1n/R5b1/1Qp1pkP1/6pP/1N4P1/2P2b2/4qR2 w - - 0 1)

Davis, Edward

Kipping, Cyril Stanley

Falkirk Herald, 1940

3N4/KB2pp1n/R5b1/1Qp1pkP1/6pP/1N4P1/2P2b2/4qR2

#2

11 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qa5
      • 2.Rxf2#
    • 1...Qa1
      • 2.Rxf2#
    • 1...Qb1
      • 2.Rxf2#
    • 1...c4+
      • 2.Sd4#
  • Tries
    • 1.Se6?
      • threat
        • 2.Sg7#
      • 1...c4+
        • 2.Sbd4#
        • 2.Sed4#
      • 1...e4
        • 2.Qxc5#
      • 1...fxe6!
    • 1.Sxf7?
      • threat
        • 2.Sh6#
      • 1...c4+
        • 2.Sd4#
      • 1...e4
        • 2.Sd4#
      • 1...Bxf7!
    • 1.Be4+?
      • 1...Kxe4
        • 2.Qd3#
      • 1...Qxe4!
    • 1.Bc8+?
      • 1...Ke4
        • 2.Qd3#
      • 1...e6!
    • 1.Rf6+?
      • 1...exf6
        • 2.Qd7#
      • 1...Sxf6!
    • 1.Qd3+?
      • 1...Qe4
        • 2.Bxe4#
        • 2.Rxf2#
        • 2.Qxe4#
      • 1...e4!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Sxe7#
      • 1...c4+
        • 2.Scd4#
      • 1...Ke4
        • 2.Qd3#
      • 1...Ke6
        • 2.Scd4#
      • 1...e4
        • 2.Sbd4#
      • 1...e6
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • Q(a);N_GUARD,P_PINR(H)::R(A),XB(b)
    • Q(a);N_GUARD::R(A),XB(b)
    • P(d);CHECK,N_GUARD,P_SPINP(e)::S(C)
  • Tries
    • Try
      • S(K);
      • Threat
        • S(K)
      • Vars
        • P(e);OGATEB,P_SPINP(d)::QAR(F),XP(d)
      • Refutation
        • P(i);XS(K)
    • Try
      • S(K);XP(i)
      • Threat
        • S(K)
      • Vars
        • P(d);CHECK,N_GUARD,P_SPINP(e)::S(C)
        • P(e);N_GUARD,P_SPINP(d)::S(C)
      • Refutation
        • B(g);XS(K)
    • Try
      • B(J);CHECK
      • Vars
        • K(f);N_SPINB(b),S_FLIGHT,XB(J)::QAB1(F)
      • Refutation
        • Q(a);XB(J)
    • Try
      • B(J);CHECK
      • Vars
        • K(f);N_SPINB(b),S_FLIGHT::QAB1(F)
      • Refutation
        • P(h);P_SPINP(h)
    • Try
      • R(H);CHECK
      • Vars
        • P(h);XR(H)::QAB(F)
      • Refutation
        • S(j);XR(H)
    • Try
      • Q(F);CHECK
      • Refutation
        • P(e);P_SPINP(e)
  • Actual
    • S(K);
    • Threat
      • S(K),XP(h)
    • Vars
      • P(d);CHECK,N_GUARD,P_SPINP(e)::S(K)
      • K(f);N_SPINB(b),S_FLIGHT::QAB1(F)
      • K(f);N_SPINB(b),S_FLIGHT::R(H)+S(K),DCHECK
      • P(e);N_GUARD,P_SPINP(d),SBLOCK::S(C)
      • P(h);::S(K)
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