MESON Chess Problem Database

Problem Display
PID: 202242 (3Q3R/6K1/6P1/8/6kp/8/8/7B w - - 0 1)

Kohser, H

Dresdner Anzeiger, 1923

3Q3R/6K1/6P1/8/6kp/8/8/7B

#2

5 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kg3
      • 2.Qxh4#
    • 1...Kh3
      • 2.Qxh4#
  • Tries
    • 1.Be4?
      • threat
        • 2.Qxh4#
      • 1...Kg3
        • 2.Qxh4#
      • 1...Kh3
        • 2.Qxh4#
      • 1...h3
        • 2.Qh4#
      • 1...Kf4!
    • 1.Rxh4+?
      • 1...Kf5
        • 2.Qf6#
        • 2.Qd5#
      • 1...Kg3!
    • 1.Qg5+?
      • 1...Kh3
        • 2.Rxh4#
        • 2.Qxh4#
        • 2.Qg2#
      • 1...Kxg5!
    • 1.Qf6?
      • 1...Kg3
        • 2.Qxh4#
      • 1...Kh3
        • 2.Qxh4#
      • 1...h3!
  • Keys
    • 1.Rh5!
      • threat
        • 2.Qxh4#
      • 1...Kg3
        • 2.Qxh4#
      • 1...Kh3
        • 2.Qxh4#
      • 1...Kf4
        • 2.Qg5#
      • 1...Kxh5
        • 2.Bf3#
      • 1...h3
        • 2.Qh4#
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAB1(D),XP(b)
    • K(a);P_SPINP(b),S_FLIGHT::QAR1(D),XP(b)
  • Tries
    • Try
      • B(A);
      • Threat
        • QAR1(D),XP(b)
      • Vars
        • K(a);P-FLIGHT::QAB1(D),XP(b)
        • K(a);P_SPINP(b),S_FLIGHT::QAR1(D),XP(b)
        • P(b);::QAR1(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(E);CHECK,XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(D)
    • Try
      • Q(D);
      • Vars
        • K(a);P-FLIGHT::QAB1(D),XP(b)
        • K(a);P_SPINP(b),S_FLIGHT::QAR1(D),XP(b)
      • Refutation
        • P(b);
  • Actual
    • R(E);
    • Threat
      • QAR1(D),XP(b)
    • Vars
      • K(a);P-FLIGHT::QAB1(D),XP(b)
      • K(a);P_SPINP(b),S_FLIGHT::QAR1(D),XP(b)
      • K(a);P-FLIGHT::QAB1(D)
      • K(a);S_FLIGHT,XR(E)::B(A)
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