MESON Chess Problem Database

Problem Display
PID: 99541 (Kb4n1/1p2Q3/pN2p3/2P1k3/3pn1PB/3rq1P1/5N2/4Rr1b w - - 0 1)

Pituk, Alexander

Magyar Sakkelet, 1955

Kb4n1/1p2Q3/pN2p3/2P1k3/3pn1PB/3rq1P1/5N2/4Rr1b

#2

9 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Sxd3#
    • 1...Qf4
      • 2.Sxd3#
    • 1...Qg5
      • 2.Sxd3#
      • 2.Qxg5#
    • 1...Qh6
      • 2.Sxd3#
    • 1...Qxe1
      • 2.Sxd3#
    • 1...Qxg3
      • 2.Qg5#
    • 1...Sd2
      • 2.Qg5#
    • 1...Sc3
      • 2.Qg5#
    • 1...Sxg3
      • 2.Bxg3#
    • 1...Sg5
      • 2.Qxg5#
  • Tries
    • 1.Qg7+?
      • 1...Sef6
        • 2.Qg5#
      • 1...Sgf6!
  • Keys
    • 1.Qxb7!
      • threat
        • 2.Sc4#
        • 2.Sd7#
      • 1...Qxg3
        • 2.Qxb8#
      • 1...Sxg3
        • 2.Sxd3#
      • 1...Sxc5
        • 2.Sc4#
      • 1...Qg5
        • 2.Sd7#
      • 1...Sg5
        • 2.Sd7#
      • 1...Qc1
        • 2.Sxd3#
        • 2.Sd7#
        • 2.Qxb8#
      • 1...Rc3
        • 2.Sd7#
      • 1...Sd2
        • 2.Sxd3#
        • 2.Sd7#
      • 1...Sd6
        • 2.Sxd3#
        • 2.Sd7#
      • 1...Sef6
        • 2.Sxd3#
        • 2.Sc4#
      • 1...Sgf6
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • Q(d);N_GUARD,P_SPINS(f)::S(B),XR(c)
    • Q(d);N_GUARD,XR(A)::S(B),XR(c)
    • Q(d);N_GUARD,P_SPINS(f),XP(C)::QAR2(H)
    • S(f);N_GUARD,P_SPINQ(d)::QAR2(H)
    • S(f);OGATE,P_SPINQ(d),XP(C)::B(E),XS(f)
    • S(f);N_GUARD,P_SPINQ(d)::QAR2(H),XS(f)
  • Tries
    • Try
      • Q(H);CHECK,N_PINP(i)
      • Vars
        • S(f);N_GUARD,P_SPINQ(d),P_SPINS(f)::QAR2(H)
      • Refutation
        • S(l);P_SPINS(l)
  • Actual
    • Q(H);N_PINP(i),XP(j)
    • Threat
      • DUALS(2)
    • Vars
      • Q(d);P_SPINS(f),XP(C)::QAB(H),XB(k)
      • S(f);P_PINQ(H),P_SPINQ(d),XP(C)::S(B),XR(c)
      • S(f);P_PINQ(H),P_SPINQ(d),XP(F)::S(G)
      • Q(d);P_SPINS(f)::S(G)
      • S(f);P_PINQ(H),P_SPINQ(d)::S(G)
      • R(c);::S(G)
      • S(l);::S(G)
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