MESON Chess Problem Database

Problem Display
PID: 9510 (8/7Q/5K2/R1Pk4/1n4p1/NP2P3/8/4n3 w - - 0 1)

Schuld, Henk L

Tidskrift for Schack, 1904

8/7Q/5K2/R1Pk4/1n4p1/NP2P3/8/4n3

#2

7 + 4

2794 Terms & Themes of Chess Problems 1907
3360 Simple Two-move Themes 1924
887 Mate in Two Moves 1931
5501 Chess Cameos 1936
3310 2345 Chess Problems 1997
5454 Near Snap 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Sec2
      • 2.Qh1#
    • 1...Sed3
      • 2.Qh1#
    • 1...Sa2
      • 2.Qb7#
    • 1...Sbc2
      • 2.Qb7#
    • 1...Sbd3
      • 2.Qb7#
    • 1...Sa6
      • 2.Qb7#
  • Tries
    • 1.Qh1+?
      • 1...Sg2
        • 2.Qxg2#
      • 1...Sf3!
    • 1.c6+?
      • 1...Kd6
        • 2.Qd7#
      • 1...Kxc6!
  • Keys
    • 1.Sc2!
      • threat
        • 2.Sxb4#
      • 1...Kc6
        • 2.Sxb4#
      • 1...Sexc2
        • 2.Qh1#
      • 1...Sbxc2
        • 2.Qb7#
      • 1...Sed3
        • 2.Qh1#
      • 1...Sa2
        • 2.Qb7#
      • 1...Sbd3
        • 2.Qb7#
      • 1...Sa6
        • 2.Qb7#
      • 1...Sc6
        • 2.e4#

This anticipates 96893(1945)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB(G)
    • S(b);N_GUARD::QAB(G)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB(G),XS(a)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • P(E);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR1(G)
      • Refutation
        • K(d);S_FLIGHT,XP(E)
  • Actual
    • S(A);
    • Threat
      • S(A),XS(b)
    • Vars
      • K(d);S_FLIGHT::S(A),XS(b)
      • S(a);N_GUARD,XS(A)::QAB(G)
      • S(b);N_GUARD,XS(A)::QAB(G)
      • S(a);N_GUARD::QAB(G)
      • S(b);N_GUARD::QAB(G)
      • S(b);SBLOCK::P(C)
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