MESON Chess Problem Database

Problem Display
PID: 219895 (7B/1pQ2Pr1/1N6/3pN1p1/4k3/2p3K1/b1P5/5R2 w - - 0 1)

Helledie, Holger

Land og Folk, 1971

(First published on Sun May 30 1971)

7B/1pQ2Pr1/1N6/3pN1p1/4k3/2p3K1/b1P5/5R2

#2

8 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sd3?
      • threat
        • 2.Qe5#
      • 1...Kd4
        • 2.Qe5#
      • 1...Ke3!
    • 1.Sf3?
      • threat
        • 2.Qe5#
      • 1...Ke3
        • 2.Re1#
        • 2.Qe5#
        • 2.Qe7#
      • 1...Kf5!
    • 1.Sed7?
      • threat
        • 2.Qe5#
      • 1...Kd4
        • 2.Qe5#
      • 1...Ke3!
    • 1.Re1+?
      • 1...Kd4
        • 2.Sf3#
      • 1...Kf5!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Sc6#
      • 1...Ke3
        • 2.Sf3#
      • 1...Kd4
        • 2.Sf3#
      • 1...Rxf7
        • 2.Sxf7#
      • 1...Rg6
        • 2.Sxg6#
      • 1...d4
        • 2.Sec4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(F)
      • Vars
        • K(c);P-FLIGHT,P_SPINR(g)::QAB1(F)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(D);
      • Threat
        • QAR1(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(D);
      • Threat
        • QAR1(F)
      • Vars
        • K(c);P-FLIGHT,P_SPINR(g)::QAB1(F)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(A);CHECK
      • Vars
        • K(c);P-FLIGHT::S(D)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(F);
    • Threat
      • QAR(F)+S(D)
    • Vars
      • K(c);P-FLIGHT::QAR(F)+S(D)
      • K(c);P-FLIGHT::S(D)
      • R(g);XP(G)::QAR(F)+S(D),XR(g)
      • R(g);::QAR(F)+S(D),XR(g)
      • P(d);SBLOCK::QAR(F)+S(D)
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