MESON Chess Problem Database

Problem Display
PID: 176205 (4n3/4p3/4B3/1b1NpN2/2p1k2p/r1P1P1b1/p3Q3/K1B5 w - - 0 1)

Laib, Kurt Friedrich

Schach-Echo, 1972

4n3/4p3/4B3/1b1NpN2/2p1k2p/r1P1P1b1/p3Q3/K1B5

#2

8 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc3
      • 2.Sxc3#
    • 1...Bf4
      • 2.exf4#
    • 1...h3
      • 2.Sxg3#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Qg2#
      • 1...Bxf4
        • 2.exf4#
      • 1...exf4
        • 2.exf4#
      • 1...h3
        • 2.Sxg3#
      • 1...Bf2!
    • 1.Sdxe7?
      • threat
        • 2.Bd5#
      • 1...Sf6
        • 2.Sd6#
      • 1...Sc7
        • 2.Sd6#
      • 1...Bc6!
    • 1.Sd4?
      • threat
        • 2.Qc2#
      • 1...Rxc3
        • 2.Sxc3#
      • 1...exd4
        • 2.exd4#
      • 1...Ba4!
    • 1.Sxh4?
      • threat
        • 2.Qc2#
      • 1...Rxc3
        • 2.Sxc3#
      • 1...Ba4
        • 2.Qxc4#
      • 1...Bxh4!
    • 1.Sfxe7?
      • threat
        • 2.Bf5#
      • 1...Sd6
        • 2.Sf6#
      • 1...Sg7
        • 2.Sf6#
      • 1...Bd7!
  • Keys
    • 1.Sb4!
      • threat
        • 2.Qg2#
      • 1...Bf2
        • 2.Qg4#
      • 1...h3
        • 2.Sxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(b);XP(D)::S(F),XR(b)
    • B(c);OGATE::QAR(C)+P(E),XB(c)
    • P(f);N_GUARD::S(G),XB(c)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAB(C)
      • Vars
        • B(c);OGATE,XS(F)::QAR(C)+P(E),XB(c)
        • P(h);OGATE,XS(F)::QAR(C)+P(E),XP(h)
        • P(f);N_GUARD::S(G),XB(c)
      • Refutation
        • B(c);
    • Try
      • S(F);XP(i)
      • Threat
        • B(H)
      • Vars
        • S(j);N_GUARD::S(G)
      • Refutation
        • B(g);
    • Try
      • S(G);
      • Threat
        • QAB(C)
      • Vars
        • R(b);XP(D)::S(F),XR(b)
        • P(h);OGATE,XS(G)::QAR(C)+P(E),XP(h)
      • Refutation
        • B(g);
    • Try
      • S(G);XP(f)
      • Threat
        • QAB(C)
      • Vars
        • R(b);XP(D)::S(F),XR(b)
        • B(g);N_GUARD::QAR2(C),XP(d)
      • Refutation
        • B(c);XS(G)
    • Try
      • S(G);XP(i)
      • Threat
        • B(H)
      • Vars
        • S(j);N_GUARD::S(F)
      • Refutation
        • B(g);
  • Actual
    • S(F);
    • Threat
      • QAB(C)
    • Vars
      • B(c);N_GUARD::QAR2(C)
      • P(f);N_GUARD::S(G),XB(c)
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