MESON Chess Problem Database

Problem Display
PID: 175799 (5K2/4Q3/1P2p3/1P1k4/P7/1p1pP3/6P1/8 w - - 0 1)

Havel, Miroslav

Narodni listy, 1898

5K2/4Q3/1P2p3/1P1k4/P7/1p1pP3/6P1/8

#2

7 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qxe6#
  • Tries
    • 1.Qd6+?
      • 1...Kc4
        • 2.Qd4#
      • 1...Ke4
        • 2.Qxe6#
      • 1...Kxd6!
    • 1.Qd7+?
      • 1...Kc4
        • 2.Qd4#
      • 1...Ke4
        • 2.Qxe6#
      • 1...Kc5
        • 2.Qd4#
      • 1...Ke5!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qd4#
      • 1...Kc4
        • 2.Qd4#
      • 1...Ke4
        • 2.Qxe6#
      • 1...Kc5
        • 2.Qd4#
      • 1...Kd6
        • 2.Qd4#
      • 1...e5
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(c);P_SPINP(d),S_FLIGHT::QAR2(F),XP(d)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAR1(F)
        • K(c);S_FLIGHT::QAR2(F),XP(d)
      • Refutation
        • K(c);P-FLIGHT,XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAR1(F)
        • K(c);S_FLIGHT::QAR2(F),XP(d)
        • K(c);OGATE,P-FLIGHT::QAB1(F)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • K(c);S_FLIGHT::QAR1(F)
      • K(c);S_FLIGHT::QAR2(F),XP(d)
      • K(c);P-FLIGHT::QAB1(F)
      • K(c);P-FLIGHT,P_SPINP(d)::QAR2(F)
      • P(d);OGATE,SBLOCK::QAB1(F)
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