MESON Chess Problem Database

Problem Display
PID: 109380 (1N1BB3/1p6/8/1pkpP3/8/p2Q4/n2P4/K7 w - - 0 1)

Sim, Malcolm

Toronto Telegram, 1935

1N1BB3/1p6/8/1pkpP3/8/p2Q4/n2P4/K7

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kb4
      • 2.Qxb5#
    • 1...Sc1
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Sb4
      • 2.Qc3#
    • 1...d4
      • 2.Qxb5#
    • 1...b6
      • 2.Sa6#
      • 2.Be7#
  • Tries
    • 1.Kb1?
      • 1...Sc3+
        • 2.Qxc3#
      • 1...Kb4
        • 2.Qxb5#
      • 1...d4
        • 2.Qxb5#
      • 1...Sc1
        • 2.Qc3#
      • 1...Sb4
        • 2.Qc3#
      • 1...b6
        • 2.Sa6#
        • 2.Be7#
      • 1...b4!
    • 1.Kxa2?
      • threat
        • 2.Qc3#
      • 1...Kb4
        • 2.Qxb5#
        • 2.Qd4#
      • 1...d4
        • 2.Qxb5#
      • 1...b4!
    • 1.Sd7+?
      • 1...Kc6
        • 2.Qg6#
      • 1...Kb4!
    • 1.Ba5?
      • 1...d4
        • 2.Qxb5#
      • 1...Sc1
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sb4
        • 2.Qc3#
      • 1...b6
        • 2.Sa6#
      • 1...b4!
    • 1.Bb6+?
      • 1...Kb4
        • 2.Qxb5#
      • 1...Kxb6!
    • 1.Bc7?
      • 1...Kb4
        • 2.Qxb5#
      • 1...d4
        • 2.Qxb5#
      • 1...Sc1
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sb4
        • 2.Qc3#
      • 1...b6
        • 2.Sa6#
        • 2.Bd6#
      • 1...b4!
    • 1.Bd7?
      • 1...Kb4
        • 2.Qxb5#
      • 1...d4
        • 2.Qxb5#
      • 1...Sc1
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sb4
        • 2.Qc3#
      • 1...b6
        • 2.Sa6#
        • 2.Be7#
      • 1...b4!
    • 1.Qxd5+?
      • 1...Kb4
        • 2.Qxb5#
      • 1...Kxd5!
  • Keys
    • 1.Bc6!
      • 1...Kb4
        • 2.Qxb5#
      • 1...bxc6
        • 2.Sa6#
      • 1...b4
        • 2.Qxd5#
      • 1...Sc1
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sb4
        • 2.Qc3#
      • 1...d4
        • 2.Qxb5#
      • 1...b6
        • 2.Be7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(d);S_FLIGHT::QAR1(C),XP(c)
    • S(a);N_GUARD::QAR2(C)
    • S(a);N_GUARD::QAR2(C),XS(a)
    • P(e);SBLOCK::QAR1(C),XP(c)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • S(a);CHECK,N_GUARD::QAR2(C),XS(a)
        • K(d);S_FLIGHT::QAR1(C),XP(c)
        • P(e);SBLOCK::QAR1(C),XP(c)
        • S(a);N_GUARD::QAR2(C)
      • Refutation
        • P(c);
    • Try
      • K(A);P-FLIGHT,XS(a)
      • Threat
        • QAR2(C)
      • Vars
        • P(e);SBLOCK::QAR1(C),XP(c)
      • Refutation
        • P(c);
    • Try
      • S(E);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR(C)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • B(F);
      • Vars
        • P(e);SBLOCK::QAR1(C),XP(c)
        • S(a);N_GUARD::QAR2(C)
        • S(a);N_GUARD::QAR2(C),XS(a)
        • P(f);N_GUARD::S(E)
      • Refutation
        • P(c);
    • Try
      • B(F);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR1(C),XP(c)
      • Refutation
        • K(d);S_FLIGHT,XB(F)
    • Try
      • B(F);
      • Vars
        • K(d);S_FLIGHT::QAR1(C),XP(c)
        • P(e);SBLOCK::QAR1(C),XP(c)
        • S(a);N_GUARD::QAR2(C)
        • S(a);N_GUARD::QAR2(C),XS(a)
      • Refutation
        • P(c);
    • Try
      • B(G);
      • Vars
        • K(d);S_FLIGHT::QAR1(C),XP(c)
        • P(e);SBLOCK::QAR1(C),XP(c)
        • S(a);N_GUARD::QAR2(C)
        • S(a);N_GUARD::QAR2(C),XS(a)
      • Refutation
        • P(c);
    • Try
      • Q(C);CHECK,XP(e)
      • Vars
        • K(d);OGATE,S_FLIGHT::QAR1(C),XP(c)
      • Refutation
        • K(d);P-FLIGHT,XQ(C)
  • Actual
    • B(G);
    • Vars
      • K(d);S_FLIGHT::QAR1(C),XP(c)
      • P(f);N_GUARD,SBLOCK,XB(G)::S(E)
      • P(c);SBLOCK::QAR1(C),XP(e)
      • S(a);N_GUARD::QAR2(C)
      • S(a);N_GUARD::QAR2(C),XS(a)
      • P(e);SBLOCK::QAR1(C),XP(c)
      • P(f);SBLOCK::B(F)
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