MESON Chess Problem Database

Problem Display
PID: 135372 (3R3K/pQ6/2r2p2/1N3n1N/4kP2/1b1R4/q1PPn3/B3r3 w - - 0 1)

Laib, Kurt Friedrich

3rd Comm., Die Schwalbe 094. TT, 1949

3R3K/pQ6/2r2p2/1N3n1N/4kP2/1b1R4/q1PPn3/B3r3

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Sc3#
    • 1...Sg1
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Seg3
      • 2.Sc3#
    • 1...Sed4
      • 2.Sc3#
    • 1...Sxf4
      • 2.Sxf6#
    • 1...Sfg3
      • 2.Sd6#
    • 1...Sh4
      • 2.Sd6#
    • 1...Sd6
      • 2.Sxd6#
    • 1...Sh6
      • 2.Sd6#
    • 1...Se7
      • 2.Sd6#
    • 1...Sg7
      • 2.Sd6#
  • Tries
    • 1.R8d4+?
      • 1...Sexd4
        • 2.Sc3#
      • 1...Sfxd4!
    • 1.Re8+?
      • 1...Se7
        • 2.Sd6#
      • 1...Be6!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Re3#
      • 1...Sxf4
        • 2.Sg3#
      • 1...Rc3
        • 2.Sd6#
      • 1...Rd6
        • 2.Sxd6#
      • 1...Sc1
        • 2.R8d4#
      • 1...Sg1
        • 2.R8d4#
      • 1...Sc3
        • 2.R8d4#
      • 1...Sg3
        • 2.R8d4#
      • 1...Sd4
        • 2.R8xd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 6
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • S(c);N_GUARD::S(F)
    • S(c);N_GUARD::S(F),XS(c)
    • S(c);SBLOCK,XP(E)::S(G),XP(h)
    • S(f);N_GUARD::S(F)
    • S(f);N_GUARD::S(F),XS(f)
  • Tries
    • Try
      • R(I);CHECK
      • Vars
        • S(c);XR(I)::S(F)
      • Refutation
        • S(f);XR(I)
    • Try
      • R(I);CHECK
      • Vars
        • S(f);P_SPINS(f)::S(F)
      • Refutation
        • B(d);P_SPINB(d)
  • Actual
    • Q(H);N_PINR(g),P_PINS(f)
    • Threat
      • R1(D)
    • Vars
      • S(c);N_GUARD,SBLOCK,XP(E)::S(G)
      • R(g);N_GUARD::S(F)
      • R(g);N_GUARD::S(F),XR(g)
      • S(c);N_GUARD::R1(I)
      • S(c);N_GUARD::R1(I),XS(c)
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