MESON Chess Problem Database

Problem Display
PID: 149554 (5B2/6pk/4Q3/7b/4P3/6K1/8/8 w - - 0 1)

Dehler, Ernst Georg

Neubrandenburger Wochenschach, 1912

5B2/6pk/4Q3/7b/4P3/6K1/8/8

#2

4 + 3

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Qd7?
      • threat
        • 2.Qxg7#
      • 1...Kg6
        • 2.Qxg7#
      • 1...Kh6
        • 2.Qxg7#
      • 1...Kg8
        • 2.Qxg7#
      • 1...Kh8
        • 2.Qxg7#
      • 1...Bf7!
    • 1.Qf7?
      • threat
        • 2.Qxg7#
      • 1...Kh6
        • 2.Qxg7#
      • 1...Kh8
        • 2.Qxg7#
      • 1...Bxf7!
    • 1.Qg8+?
      • 1...Kg6
        • 2.Qxg7#
      • 1...Kh6
        • 2.Qxg7#
      • 1...Kxg8!
    • 1.Qf6?
      • threat
        • 2.Qxg7#
      • 1...Kg8
        • 2.Qxg7#
      • 1...Kh8
        • 2.Qxg7#
      • 1...g5
        • 2.Qg7#
      • 1...g6
        • 2.Qg7#
      • 1...gxf6!
    • 1.Qe7?
      • threat
        • 2.Qxg7#
      • 1...Kg6
        • 2.Qxg7#
      • 1...Kh6
        • 2.Qxg7#
      • 1...Kg8
        • 2.Qxg7#
      • 1...Kh8
        • 2.Qxg7#
      • 1...Bf7!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Qxg7#
      • 1...Kg6
        • 2.Qxg7#
      • 1...Kh6
        • 2.Qxg7#
      • 1...Kg8
        • 2.Qxg7#
      • 1...Kh8
        • 2.Qxg7#
      • 1...g5
        • 2.Qg7#
      • 1...g6
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);P_PINP(b)
      • Threat
        • QAR1(C),XP(b)
      • Vars
        • K(c);N_SPINP(b),S_FLIGHT::QAR1(C),XP(b)
        • K(c);P-FLIGHT::QAB1(C),XP(b)
        • K(c);N_SPINP(b),P-FLIGHT::QAB1(C),XP(b)
      • Refutation
        • B(a);N_SPINP(b)
    • Try
      • Q(C);P_PINP(b)
      • Threat
        • QAR1(C),XP(b)
      • Vars
        • K(c);P-FLIGHT::QAB1(C),XP(b)
        • K(c);N_SPINP(b),P-FLIGHT::QAB1(C),XP(b)
      • Refutation
        • B(a);N_SPINP(b),XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);P_SPINP(b),S_FLIGHT::QAR1(C),XP(b)
        • K(c);P-FLIGHT,P_SPINP(b)::QAB1(C),XP(b)
      • Refutation
        • K(c);S_FLIGHT,XQ(C)
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XP(b)
      • Vars
        • K(c);S_FLIGHT::QAR1(C),XP(b)
        • K(c);P-FLIGHT,P_SPINP(b)::QAB1(C),XP(b)
        • P(b);::QAR1(C)
      • Refutation
        • P(b);XQ(C)
    • Try
      • Q(C);P_PINP(b)
      • Threat
        • QAR1(C),XP(b)
      • Vars
        • K(c);N_SPINP(b),S_FLIGHT::QAR1(C),XP(b)
        • K(c);P-FLIGHT::QAB1(C),XP(b)
        • K(c);N_SPINP(b),P-FLIGHT::QAB1(C),XP(b)
      • Refutation
        • B(a);N_SPINP(b)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C),XP(b)
    • Vars
      • K(c);S_FLIGHT::QAR1(C),XP(b)
      • K(c);P-FLIGHT,P_SPINP(b)::QAB1(C),XP(b)
      • P(b);::QAR1(C)
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