MESON Chess Problem Database

Problem Display
PID: 108405 (3B2R1/4p3/3Np3/1K1Nkp2/8/1Q6/1P6/8 w - - 0 1)

Hawkins, Xenophon

Montreal Gazette, 1896

3B2R1/4p3/3Np3/1K1Nkp2/8/1Q6/1P6/8

#2

7 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Kc6?
      • threat
        • 2.Qc3#
        • 2.Qe3#
      • 1...Kd4
        • 2.Qc3#
        • 2.Qe3#
      • 1...exd6
        • 2.Qe3#
      • 1...f4
        • 2.Qc3#
      • 1...exd5!
    • 1.Sc7?
      • 1...Kd4
        • 2.Qc3#
      • 1...Kf4
        • 2.Qg3#
      • 1...Kxd6
        • 2.Qxe6#
      • 1...Kf6
        • 2.Qxe6#
      • 1...exd6
        • 2.Qe3#
      • 1...f4!
    • 1.Sf7+?
      • 1...Kd4
        • 2.Qc4#
      • 1...Ke4!
    • 1.Qc3+?
      • 1...Kxd5
        • 2.Qc5#
      • 1...Kxd6!
    • 1.Qe3+?
      • 1...Kxd5
        • 2.Qc5#
      • 1...Kxd6!
  • Keys
    • 1.Sf4!
      • 1...Kd4
        • 2.Qc3#
      • 1...Kxf4
        • 2.Qg3#
      • 1...Kxd6
        • 2.Qxe6#
      • 1...Kf6
        • 2.Qxe6#
      • 1...exd6
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • P(d);XS(E)::QAR2(B)
        • P(b);::QAB(B)
      • Refutation
        • P(c);XS(D)
    • Try
      • S(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
        • K(a);S_FLIGHT,XS(E)::QAR1(B),XP(c)
        • K(a);P_SPINP(d),S_FLIGHT::QAR1(B),XP(c)
        • P(d);SBLOCK,XS(E)::QAR2(B)
      • Refutation
        • P(b);
    • Try
      • S(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(D)::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XS(E)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(D)::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XS(E)
  • Actual
    • S(D);
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);OGATEB,S_FLIGHT,XS(D)::QAB1(B)
      • K(a);S_FLIGHT,XS(E)::QAR1(B),XP(c)
      • K(a);P_SPINP(d),S_FLIGHT::QAR1(B),XP(c)
      • P(d);SBLOCK,XS(E)::QAR2(B)
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