MESON Chess Problem Database

Problem Display
PID: 144130 (8/3p1B2/1pNPr1n1/1p1k1N2/pP3P2/K1QP4/7b/8 w - - 0 1)

af Hallstrom, Edvard Johannes Gabriel

Tidskrift for Schack, 1909

8/3p1B2/1pNPr1n1/1p1k1N2/pP3P2/K1QP4/7b/8

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sxf4
      • 2.Sce7#
    • 1...Sh4
      • 2.Sce7#
    • 1...Se5
      • 2.Sce7#
    • 1...Se7
      • 2.Scxe7#
    • 1...Sf8
      • 2.Sce7#
    • 1...Sh8
      • 2.Sce7#
    • 1...dxc6
      • 2.Qd4#
  • Tries
    • 1.Sa5?
      • threat
        • 2.Qd4#
      • 1...bxa5
        • 2.Qc5#
      • 1...Bg1!
    • 1.Qe1?
      • threat
        • 2.Qh1#
        • 2.Qe4#
      • 1...Sxf4
        • 2.Sce7#
        • 2.Qe4#
      • 1...Bg1
        • 2.Qe4#
      • 1...Sh4
        • 2.Sce7#
        • 2.Qe4#
      • 1...Se5
        • 2.Sce7#
        • 2.Qe4#
      • 1...Kxc6!
    • 1.Qb2?
      • threat
        • 2.Qg2#
      • 1...Sxf4
        • 2.Sce7#
      • 1...Sh4
        • 2.Sce7#
      • 1...Se5
        • 2.Sce7#
      • 1...Kxc6!
    • 1.Qe5+?
      • 1...Sxe5
        • 2.Sce7#
      • 1...Kxc6!
    • 1.Qc2?
      • threat
        • 2.Qg2#
      • 1...Sh4
        • 2.Sce7#
      • 1...Se5
        • 2.Sce7#
      • 1...Sxf4!
  • Keys
    • 1.Qh8!
      • 1...Kxc6
        • 2.Qa8#
      • 1...Bxf4
        • 2.Qh1#
      • 1...Sxf4
        • 2.Sce7#
      • 1...Sxh8
        • 2.Sce7#
      • 1...dxc6
        • 2.Qd4#
      • 1...Bg1
        • 2.Qh1#
      • 1...Bg3
        • 2.Qh1#
      • 1...Sh4
        • 2.Sce7#
      • 1...Se5
        • 2.Sce7#
      • 1...Se7
        • 2.Scxe7#
      • 1...Sf8
        • 2.Sce7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(g);N_GUARD,XP(E)::S(G)
    • S(g);N_GUARD::S(G)
    • S(g);N_GUARD::S(G),XS(g)
    • P(h);SBLOCK,XS(G)::QAR1(B)
  • Tries
    • Try
      • S(G);
      • Threat
        • QAR1(B)
      • Vars
        • P(e);N_GUARD,XS(G)::QAR1(B)
      • Refutation
        • B(a);
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAB1(B)
      • Refutation
        • K(d);N_SPINR(f),S_FLIGHT,XS(G)
    • Try
      • Q(B);
      • Threat
        • QAB(B)
      • Vars
        • S(g);N_GUARD,XP(E)::S(G)
        • S(g);N_GUARD::S(G)
      • Refutation
        • K(d);N_SPINR(f),S_FLIGHT,XS(G)
    • Try
      • Q(B);CHECK
      • Vars
        • S(g);XQ(B)::S(G)
      • Refutation
        • K(d);N_SPINR(f),S_FLIGHT,XS(G)
    • Try
      • Q(B);
      • Threat
        • QAB(B)
      • Vars
        • S(g);N_GUARD::S(G)
      • Refutation
        • S(g);XP(E)
  • Actual
    • Q(B);
    • Vars
      • K(d);N_SPINR(f),OGATEB,S_FLIGHT,XS(G)::QAB(B)
      • B(a);OGATE,XP(E)::QAB(B)
      • S(g);N_GUARD,XP(E)::S(G)
      • S(g);N_GUARD,XQ(B)::S(G)
      • P(h);SBLOCK,XS(G)::QAR1(B)
      • B(a);OGATE::QAB(B)
      • S(g);N_GUARD::S(G)
      • S(g);N_GUARD::S(G),XS(g)
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