MESON Chess Problem Database

Problem Display
PID: 92858 (3nb3/8/3R4/1Q1Nr1Nk/3p3q/5PPp/5n2/KBB4R w - - 0 1)

Ekstrom, Sven Johan Adrian

Tidskrift for Schack, 1941

3nb3/8/3R4/1Q1Nr1Nk/3p3q/5PPp/5n2/KBB4R

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sf4+?
      • 1...Kxg5
        • 2.Qxe5#
      • 1...Qxf4!
    • 1.Qxe8+?
      • 1...Sf7
        • 2.Qxf7#
      • 1...Rxe8!
  • Keys
    • 1.Sxh3!
      • threat
        • 2.Rh6#
      • 1...Qg5
        • 2.Shf4#
      • 1...Qf6
        • 2.Sxf6#
      • 1...Qf4
        • 2.Sdxf4#
      • 1...Re3
        • 2.Sdf4#
      • 1...Rg5
        • 2.Shf4#
      • 1...Re6
        • 2.Sf6#
      • 1...Bg6
        • 2.Bxg6#
      • 1...Sg4
        • 2.Sdf4#
      • 1...Se6
        • 2.Qxe8#
      • 1...Sf7
        • 2.Bg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(f);P-FLIGHT,P_SPINR(e),XS(I)::QAR2(G),XR(e)
      • Refutation
        • Q(d);P_SPINP(b),XS(H)
    • Try
      • Q(G);CHECK,XB(h)
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::QAB(G),XS(g)
      • Refutation
        • R(e);XQ(G)
  • Actual
    • S(I);XP(b)
    • Threat
      • R1(J)
    • Vars
      • Q(d);SBLOCK::R(D)+S(I),DCHECK
      • Q(d);N_GUARD::S(H),XQ(d)
      • R(e);::QAR(G)+S(H),DCHECK
      • R(e);SBLOCK::S(I)
      • B(h);N_GUARD::B(B),XB(h)
      • S(a);S_CUTQ(d)::S(H)
      • S(g);N_GUARD,S_CUTR(e)::QAB(G),XB(h)
      • S(g);S_CUTB(h)::B(B)
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