MESON Chess Problem Database

Problem Display
PID: 109008 (Q6n/3p3K/3Pk2b/4Pp2/2p2p2/5N2/3P4/8 w - - 0 1)

Moravec, Josef

Vecherni Praha, 1959

Q6n/3p3K/3Pk2b/4Pp2/2p2p2/5N2/3P4/8

#2

6 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kf7
      • 2.Qg8#
    • 1...Sg6
      • 2.Qg8#
    • 1...c3
      • 2.Qa2#
  • Tries
    • 1.Kxh6?
      • 1...Kf7
        • 2.Sg5#
      • 1...Sg6
        • 2.Qg8#
      • 1...c3
        • 2.Qa2#
      • 1...Sf7+!
    • 1.Sd4+?
      • 1...Kf7
        • 2.Qg8#
      • 1...Kxe5!
    • 1.Qc8?
      • threat
        • 2.Qxc4#
      • 1...Kf7
        • 2.Qg8#
      • 1...c3
        • 2.Qc4#
      • 1...Kd5!
    • 1.Qxh8?
      • threat
        • 2.Qg8#
      • 1...Kf7
        • 2.Qg8#
      • 1...Kd5!
  • Keys
    • 1.d4!
      • 1...Kf7
        • 2.Qg8#
      • 1...cxd4 ep
        • 2.Qa2#
      • 1...Bg5
        • 2.Sxg5#
      • 1...Bg7
        • 2.Sg5#
      • 1...Bf8
        • 2.Sg5#
      • 1...Sg6
        • 2.Qg8#
      • 1...Sf7
        • 2.d5#
      • 1...c3
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(d);S_FLIGHT::QAB1(F)
    • S(g);N_GUARD::QAB(F)
    • P(a);OGATEB::QAB(F)
  • Tries
    • Try
      • K(E);P-FLIGHT,XB(e)
      • Vars
        • K(d);S_FLIGHT::S(B)
        • S(g);N_GUARD::QAB(F)
        • P(a);OGATEB::QAB(F)
      • Refutation
        • S(g);CHECK
    • Try
      • S(B);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB1(F)
      • Refutation
        • K(d);P-FLIGHT,XP(C)
    • Try
      • Q(F);P_PINP(f)
      • Threat
        • QAB(F),XP(a)
      • Vars
        • K(d);N_SPINP(f),S_FLIGHT::QAB1(F)
        • P(a);::QAB(F)
      • Refutation
        • K(d);N_SPINP(f),S_FLIGHT
    • Try
      • Q(F);XS(g)
      • Threat
        • QAB(F)
      • Vars
        • K(d);S_FLIGHT::QAB1(F)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • P(A);
    • Vars
      • K(d);S_FLIGHT::QAB1(F)
      • P(a);EP,OGATEB,XP(A)::QAB(F)
      • B(e);N_GUARD::S(B),XB(e)
      • B(e);N_GUARD::S(B)
      • S(g);N_GUARD::QAB(F)
      • S(g);SBLOCK::P(A)
      • P(a);OGATEB::QAB(F)
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