MESON Chess Problem Database

Problem Display
PID: 96758 (5BB1/K2Q1n2/6p1/4k3/4Pr2/2N5/8/4R3 w - - 0 1)

Tritten, Pierre

Problemesis, 2004

5BB1/K2Q1n2/6p1/4k3/4Pr2/2N5/8/4R3

#2

7 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Qe7#
    • 1...Sg5
      • 2.Qd6#
    • 1...Sd6
      • 2.Qxd6#
    • 1...Sh6
      • 2.Qd6#
    • 1...Sd8
      • 2.Qd6#
    • 1...Sh8
      • 2.Qd6#
  • Tries
    • 1.Qe8+?
      • 1...Kf6
        • 2.Qe7#
      • 1...Kd4!
    • 1.Qd4+?
      • 1...Ke6
        • 2.Qd6#
      • 1...Kxd4!
    • 1.Qc7+?
      • 1...Ke6
        • 2.Qd6#
        • 2.Qe7#
      • 1...Kf6
        • 2.Qe7#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Kd4!
  • Keys
    • 1.Se2!
      • threat
        • 2.Qe7#
      • 1...Kxe4
        • 2.Sg1#
      • 1...Kf6
        • 2.Qe7#
      • 1...Rxe4
        • 2.Bg7#
      • 1...Rf6
        • 2.Qd5#
      • 1...Sg5
        • 2.Qd4#
      • 1...Sd8
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • K(b);S_FLIGHT::QAB1(E)
    • S(d);N_GUARD::QAB1(E)
    • S(d);N_GUARD::QAB1(E),XS(d)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);P-FLIGHT,P_SPINS(d)::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
        • S(d);N_GUARD,P_SPINS(d)::QAB1(E),XS(d)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(B);
    • Threat
      • QAR2(E)
    • Vars
      • K(b);P-FLIGHT,XP(C)::R(A)+S(B)
      • K(b);S_FLIGHT::QAB1(E)
      • R(a);N_GUARD,SBLOCK,XP(C)::B(F)
      • R(a);SBLOCK::QAR1(E)
      • S(d);::QAB1(E)
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