MESON Chess Problem Database

Problem Display
PID: 221617 (8/8/8/7Q/6K1/6p1/7b/R5Nk w - - 0 1)

Ebert, Hilmar

Deutsche Schachzeitung, 1974

8/8/8/7Q/6K1/6p1/7b/R5Nk

#2

4 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Kh3?
      • 1...Bxg1
        • 2.Kxg3#
      • 1...g2!
    • 1.Kf4?
      • 1...Kg2
        • 2.Qf3#
      • 1...g2+!
    • 1.Kh4?
      • 1...Kg2
        • 2.Qf3#
      • 1...Bxg1
        • 2.Kxg3#
      • 1...g2!
    • 1.Kf5?
      • 1...Kg2
        • 2.Qf3#
      • 1...g2!
    • 1.Kg5?
      • 1...Kg2
        • 2.Qf3#
      • 1...g2!
  • Keys
    • 1.Sh3+!
      • 1...Kg2
        • 2.Qd5#
      • 1...Bg1
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);N_PINB(b),S_FLIGHT
      • Vars
        • B(b);P_SPINB(b),XS(B)::QAR(D)+K(C),XP(c)
      • Refutation
        • P(c);
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);N_SPINB(b),S_FLIGHT::QAB1(D)
      • Refutation
        • P(c);CHECK
    • Try
      • K(C);N_PINB(b),P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
        • B(b);P_SPINB(b),XS(B)::QAR(D)+K(C),XP(c)
      • Refutation
        • P(c);
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(a);N_SPINB(b),S_FLIGHT::QAB1(D)
      • Refutation
        • P(c);
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);N_SPINB(b),S_FLIGHT::QAB1(D)
      • Refutation
        • P(c);
  • Actual
    • S(B);CHECK,N_PINB(b)
    • Vars
      • K(a);S_FLIGHT::QAB(D)
      • B(b);P_SPINB(b)::QAR(D)+S(B)
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