MESON Chess Problem Database

Problem Display
PID: 121626 (2NnK3/5pP1/2P1kr1p/1pp1Pn2/rb2Qp1q/p1pN1p1B/8/3b4 w - - 0 1)

Kolcak, Marek

UV CSTV TT, 1976

2NnK3/5pP1/2P1kr1p/1pp1Pn2/rb2Qp1q/p1pN1p1B/8/3b4

#2

8 + 16

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Sxf4#
    • 1...Qf2
      • 2.Sxf4#
    • 1...Qxh3
      • 2.Sxf4#
    • 1...Qh5
      • 2.Sxf4#
    • 1...Rg6
      • 2.Bxf5#
    • 1...Ba5
      • 2.Sxc5#
    • 1...Sxc6
      • 2.Qxc6#
  • Tries
    • 1.Qd4?
      • threat
        • 2.Qd6#
        • 2.Qd7#
      • 1...Qxh3
        • 2.Sxf4#
        • 2.Qd7#
      • 1...Qg4
        • 2.Qd7#
      • 1...Ra7
        • 2.Qd6#
      • 1...Sb7
        • 2.Qd7#
      • 1...c4
        • 2.Qd7#
      • 1...cxd4!
    • 1.c7?
      • threat
        • 2.cxd8S#
      • 1...Rg6
        • 2.Bxf5#
      • 1...Ba5
        • 2.Sxc5#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sb7!
  • Keys
    • 1.g8S!
      • threat
        • 2.exf6#
      • 1...Sxc6
        • 2.Qxc6#
      • 1...Qe1
        • 2.Sxf4#
      • 1...Rg6
        • 2.Bxf5#
      • 1...Ba5
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • Q(h);N_GUARD::S(A),XP(g)
    • Q(h);N_GUARD,N_SPINS(k),XB(B)::S(A),XP(g)
    • R(m);N_GUARD::B(B),XS(k)
    • B(f);N_GUARD::S(A),XP(j)
    • S(p);OGATE,XP(E)::QAR2(C),XS(p)
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(h);N_SPINS(k)::QAB1(C)
        • R(e);::QAR1(C)
        • S(p);::QAB1(C)
        • P(j);::QAB1(C)
      • Refutation
        • P(j);XQ(C)
    • Try
      • P(E);
      • Threat
        • PXS(p)=S
      • Vars
        • R(m);N_GUARD::B(B),XS(k)
        • B(f);N_GUARD::S(A),XP(j)
        • S(p);N_GUARD::QAR2(C),XS(p)
      • Refutation
        • S(p);
  • Actual
    • P(F);
    • Threat
      • QAR(C)+P(D),XR(m)
    • Vars
      • S(p);OGATE,XP(E)::QAR2(C),XS(p)
      • Q(h);N_GUARD::S(A),XP(g)
      • R(m);N_GUARD::B(B),XS(k)
      • B(f);N_GUARD::S(A),XP(j)
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