MESON Chess Problem Database

Problem Display
PID: 10429 (8/8/8/3p4/3K4/5Q2/5N1B/4k3 w - - 0 1)

Holm, Karl Helmer

Problem (Zagreb), 1964

8/8/8/3p4/3K4/5Q2/5N1B/4k3

#2

4 + 2

3295 Einfuhrung in die Welt des Schachproblem 1984

SOLUTION

  • SOUND
  • Sets
    • 1...Kf1
      • 2.Sd3#
    • 1...Kd2
      • 2.Qd1#
  • Tries
    • 1.Kc3?
      • threat
        • 2.Sd3#
      • 1...Kf1
        • 2.Sd3#
      • 1...d4+!
    • 1.Ke3?
      • threat
        • 2.Sd3#
        • 2.Qd1#
        • 2.Qh1#
        • 2.Qe2#
      • 1...Kf1
        • 2.Sd3#
        • 2.Qh1#
      • 1...d4+!
    • 1.Kxd5?
      • 1...Kf1
        • 2.Sd3#
      • 1...Kd2!
    • 1.Bg1?
      • threat
        • 2.Qd1#
      • 1...Kd2
        • 2.Qd1#
      • 1...Kf1!
    • 1.Be5?
      • 1...Kd2
        • 2.Qd1#
      • 1...Kf1!
    • 1.Bd6?
      • 1...Kd2
        • 2.Qd1#
      • 1...Kf1!
    • 1.Bc7?
      • 1...Kd2
        • 2.Qd1#
      • 1...Kf1!
    • 1.Bb8?
      • 1...Kd2
        • 2.Qd1#
      • 1...Kf1!
  • Keys
    • 1.Bg3!
      • threat
        • 2.Se4#
        • 2.Qd1#
      • 1...Kf1
        • 2.Sh3#
      • 1...Kd2
        • 2.Qd1#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR(C)+S(A)
    • K(a);S_FLIGHT::QAR1(C)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Threat
        • S(A)
      • Vars
        • K(a);P-FLIGHT::QAR(C)+S(A)
      • Refutation
        • P(b);CHECK
    • Try
      • K(D);S_FLIGHT
      • Threat
        • DUALS(4)
      • Refutation
        • P(b);CHECK
    • Try
      • K(D);P-FLIGHT,XP(b)
      • Vars
        • K(a);P-FLIGHT::QAR(C)+S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(B);
      • Threat
        • QAR1(C)
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(B);
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(B);
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(B);
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(B);
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(B);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);P-FLIGHT::QAR(C)+S(A)
      • K(a);S_FLIGHT::QAR1(C)
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