MESON Chess Problem Database

Problem Display
PID: 135369 (7b/n4p2/rp6/pk2nR1b/p7/Pp1PN2r/4Q3/K1R4B w - - 0 1)

Laib, Kurt Friedrich

Die Schwalbe, 1942

7b/n4p2/rp6/pk2nR1b/p7/Pp1PN2r/4Q3/K1R4B

#2

8 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rf3
      • 2.d4#
    • 1...Bg6
      • 2.d4#
    • 1...Sc6
      • 2.Bxc6#
    • 1...Sc8
      • 2.Bc6#
    • 1...b2+
      • 2.Qxb2#
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sc7#
      • 1...Sxd3+
        • 2.Sf6#
      • 1...Sf3+
        • 2.d4#
      • 1...Sc4+
        • 2.Sc3#
      • 1...Sg4+
        • 2.Sc3#
      • 1...Sec6+
        • 2.Sc3#
      • 1...Sg6+
        • 2.Sc3#
      • 1...Sd7+
        • 2.Sc3#
      • 1...b2+
        • 2.Qxb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 4
  • Sets
    • R(b);S_CUTB(g)::QAB(D)+P(F)
    • B(g);N_GUARD::QAB(D)+P(F)
    • S(j);N_GUARD::B(C),XS(j)
    • S(j);N_GUARD::B(C)
    • P(a);CHECK,OGATEB::QAR(D),XP(a)
  • Actual
    • S(G);N_PINS(f)
    • Threat
      • S(G)
    • Vars
      • S(f);CHECK,P_SPINS(f),XP(F)::R(H)+S(G)
      • S(f);CHECK,N_GUARD,S_CUTB(g),S_CUTR(b)::QAB(D)+P(F)
      • S(f);CHECK::R(H)+S(G),DCHECK
      • P(a);CHECK,OGATEB::QAR(D),XP(a)
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