MESON Chess Problem Database

Problem Display
PID: 218159 (8/2nB2p1/p1N2bP1/P1Pk4/1Pp4n/Nbp4p/p1P1Q2P/K7 w - - 0 1)

Baird, Edith Elina Helen (Mrs WJ)

British Chess Magazine, 1921

8/2nB2p1/p1N2bP1/P1Pk4/1Pp4n/Nbp4p/p1P1Q2P/K7

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc2
      • 2.Qxc4#
    • 1...Ba4
      • 2.Qxc4#
    • 1...Bd4
      • 2.Se7#
    • 1...Be5
      • 2.Qxe5#
    • 1...Bg5
      • 2.Qe5#
    • 1...Be7
      • 2.Qe5#
    • 1...Bd8
      • 2.Qe5#
    • 1...Sg2
      • 2.Qf3#
    • 1...Sf3
      • 2.Qxf3#
    • 1...Sf5
      • 2.Qf3#
    • 1...Sxg6
      • 2.Qf3#
    • 1...Sb5
      • 2.Qe6#
    • 1...Se6
      • 2.Qxe6#
    • 1...Sa8
      • 2.Qe6#
    • 1...Se8
      • 2.Qe6#
  • Tries
    • 1.Sxc4?
      • threat
        • 2.Sb6#
      • 1...Sa8
        • 2.Qe6#
      • 1...Bxc4!
    • 1.Sb5?
      • threat
        • 2.Sxc7#
      • 1...Sxb5
        • 2.Qe6#
      • 1...Be5
        • 2.Se7#
        • 2.Qxe5#
      • 1...Bd8
        • 2.Sxc3#
        • 2.Qe5#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sa8
        • 2.Qe6#
      • 1...Se8
        • 2.Qe6#
      • 1...axb5!
    • 1.Qd1+?
      • 1...Bd4
        • 2.Qxd4#
      • 1...Ke4!
    • 1.Qd3+?
      • 1...Bd4
        • 2.Qxd4#
      • 1...cxd3!
    • 1.cxb3?
      • threat
        • 2.Qxc4#
        • 2.bxc4#
      • 1...cxb3
        • 2.Qc4#
      • 1...Bd4
        • 2.Se7#
        • 2.bxc4#
      • 1...c2+!
  • Keys
    • 1.Qg4!
      • 1...Bxc2
        • 2.Qxc4#
      • 1...Sxg6
        • 2.Qf3#
      • 1...Ba4
        • 2.Qxc4#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Be5
        • 2.Se7#
      • 1...Bg5
        • 2.Qd4#
      • 1...Be7
        • 2.Qd4#
      • 1...Bd8
        • 2.Qd4#
      • 1...Sg2
        • 2.Qf3#
      • 1...Sf3
        • 2.Qxf3#
      • 1...Sf5
        • 2.Qf3#
      • 1...Sb5
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sa8
        • 2.Qe6#
      • 1...Se8
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 5
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(b);N_GUARD,XP(B)::QAB1(C),XP(e)
    • B(b);N_GUARD::QAB1(C),XP(e)
    • B(i);N_GUARD,SBLOCK::S(I)
    • B(i);N_GUARD::QAR1(C),XB(i)
    • B(i);N_GUARD::QAR1(C)
    • S(f);N_GUARD::QAB(C)
    • S(f);N_GUARD::QAB(C),XS(f)
    • S(f);N_GUARD,XP(J)::QAB(C)
    • S(j);N_GUARD::QAB1(C)
    • S(j);N_GUARD::QAB1(C),XS(j)
  • Tries
    • Try
      • S(E);XP(e)
      • Threat
        • S(E)
      • Vars
        • S(j);N_GUARD::QAB1(C)
      • Refutation
        • B(b);XS(E)
    • Try
      • S(E);
      • Threat
        • S(E),XS(j)
      • Vars
        • S(j);N_GUARD,XS(E)::QAB1(C)
        • S(j);N_GUARD::QAB1(C),XS(j)
        • S(j);N_GUARD::QAB1(C)
      • Refutation
        • P(h);XS(E)
    • Try
      • Q(C);CHECK
      • Vars
        • B(i);N_GUARD,P_SPINB(i)::QAR1(C),XB(i)
      • Refutation
        • K(g);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • B(i);N_GUARD,P_SPINB(i)::QAR1(C),XB(i)
      • Refutation
        • P(e);XQ(C)
    • Try
      • P(B);XB(b)
      • Threat
        • DUALS(2)
      • Vars
        • P(e);XP(B)::QAB1(C)
      • Refutation
        • P(c);CHECK
  • Actual
    • Q(C);
    • Vars
      • B(b);N_GUARD,XP(B)::QAB1(C),XP(e)
      • S(f);N_GUARD,XP(J)::QAB(C)
      • B(b);N_GUARD::QAB1(C),XP(e)
      • B(i);N_GUARD::QAR1(C),XB(i)
      • B(i);N_GUARD,SBLOCK::S(I)
      • B(i);N_GUARD::QAR1(C)
      • S(f);N_GUARD::QAB(C)
      • S(f);N_GUARD::QAB(C),XS(f)
      • S(j);N_GUARD::QAB1(C)
      • S(j);N_GUARD::QAB1(C),XS(j)
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