MESON Chess Problem Database

Problem Display
PID: 61777 (8/8/7B/Kp2p3/1N1k4/1p6/1N6/2Q2n2 w - - 0 1)

Maybee, Edward E

Chess, 1943

8/8/7B/Kp2p3/1N1k4/1p6/1N6/2Q2n2

#2

5 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Sh2
      • 2.Qe3#
    • 1...Se3
      • 2.Qxe3#
    • 1...Sg3
      • 2.Qe3#
    • 1...e4
      • 2.Bg7#
  • Tries
    • 1.Qd2+?
      • 1...Ke4
        • 2.Qd3#
      • 1...Kc5
        • 2.Bf8#
        • 2.Qd5#
      • 1...Sxd2!
    • 1.Qe1?
      • 1...Kc5
        • 2.Qxe5#
      • 1...Sd2
        • 2.Qe3#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sh2
        • 2.Qe3#
      • 1...Sg3
        • 2.Qe3#
      • 1...e4!
    • 1.Qc3+?
      • 1...Ke4
        • 2.Qd3#
      • 1...Kxc3!
  • Keys
    • 1.Qg5!
      • 1...Kc3
        • 2.Qxe5#
      • 1...Ke4
        • 2.Qg4#
      • 1...Kc5
        • 2.Qxe5#
      • 1...Sd2
        • 2.Qe3#
      • 1...Sh2
        • 2.Qe3#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sg3
        • 2.Qe3#
      • 1...e4
        • 2.Bg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB1(A)
    • S(a);N_GUARD::QAB1(A),XS(a)
    • P(e);OGATEB,SBLOCK::B(E)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(A)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);
      • Vars
        • K(c);S_FLIGHT::QAR2(A),XP(e)
        • S(a);N_GUARD::QAB1(A)
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • P(e);
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(A)
      • Refutation
        • K(c);S_FLIGHT,XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(c);S_FLIGHT::QAB(A),XP(e)
      • K(c);P-FLIGHT::QAR2(A)
      • K(c);P_SPINP(e),S_FLIGHT::QAR2(A),XP(e)
      • S(a);N_GUARD::QAB1(A)
      • S(a);N_GUARD::QAB1(A),XS(a)
      • P(e);OGATEB,SBLOCK::B(E)
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