MESON Chess Problem Database

Problem Display
PID: 124279 (8/N6K/R1p5/N1p5/1knn2QR/pPp5/p6b/8 w - - 0 1)

Kiss, Janos

Sinfonie Scacchistiche, 1983

8/N6K/R1p5/N1p5/1knn2QR/pPp5/p6b/8

#2

7 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sxa5
      • 2.Rb6#
    • 1...Sc2
      • 2.Qxc4#
    • 1...Se2
      • 2.Qxc4#
    • 1...Sxb3
      • 2.S5xc6#
      • 2.Qxc4#
    • 1...Sf3
      • 2.Qxc4#
    • 1...Sb5
      • 2.S7xc6#
      • 2.Qxc4#
    • 1...Sf5
      • 2.Qxc4#
    • 1...Se6
      • 2.Qxc4#
  • Tries
    • 1.S5xc6+?
      • 1...Sxc6
        • 2.Qxc4#
      • 1...Kxb3!
    • 1.S7xc6+?
      • 1...Sxc6
        • 2.Qxc4#
      • 1...Kb5!
    • 1.Qe2?
      • threat
        • 2.Qxc4#
      • 1...Sxa5
        • 2.Rb6#
      • 1...Sxe2
        • 2.Rxc4#
      • 1...Sb2
        • 2.S7xc6#
      • 1...Sd2
        • 2.S7xc6#
      • 1...Se3
        • 2.S7xc6#
      • 1...Sb6
        • 2.S7xc6#
      • 1...Sd6
        • 2.S7xc6#
      • 1...Se5!
    • 1.Qe6?
      • threat
        • 2.Qxc4#
      • 1...Sxa5
        • 2.Rb6#
      • 1...Sxe6
        • 2.Rxc4#
      • 1...Sb2
        • 2.S5xc6#
      • 1...Sd2
        • 2.S5xc6#
      • 1...Se3
        • 2.S5xc6#
      • 1...Sb6
        • 2.S5xc6#
      • 1...Sd6
        • 2.S5xc6#
      • 1...Se5!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qxc4#
      • 1...Sxa5
        • 2.Rb6#
      • 1...Sb2
        • 2.S5xc6#
      • 1...Sd2
        • 2.S5xc6#
      • 1...Se3
        • 2.S5xc6#
      • 1...Se5
        • 2.Qb8#
      • 1...Sb6
        • 2.S5xc6#
      • 1...Sd6
        • 2.S5xc6#
      • 1...Se6
        • 2.Rxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • S(f);N_GUARD,P_SPINS(g),SBLOCK,XS(D)::R(E)
    • S(g);OGATE,P_SPINS(f)::QAR1(B),XS(f)
  • Tries
    • Try
      • S(D);CHECK,XP(i)
      • Vars
        • S(g);OGATE,P_SPINS(f),XS(D)::QAR1(B),XS(f)
      • Refutation
        • K(e);P-FLIGHT,XP(A)
    • Try
      • S(F);CHECK,XP(i)
      • Vars
        • S(g);OGATE,P_SPINS(f),XS(F)::QAR1(B),XS(f)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR1(B),XS(f)
      • Vars
        • S(f);N_GUARD,P_SPINS(g),SBLOCK,XS(D)::R(E)
        • S(g);OGATE,P_SPINS(f),XQ(B)::R1(C),XS(f)
        • S(f);P_SPINS(g)::S(F),XP(i)
      • Refutation
        • S(f);P_SPINS(g)
    • Try
      • Q(B);
      • Threat
        • QAR1(B),XS(f)
      • Vars
        • S(f);N_GUARD,P_SPINS(g),SBLOCK,XS(D)::R(E)
        • S(g);OGATE,P_SPINS(f),XQ(B)::R1(C),XS(f)
        • S(f);P_SPINS(g)::S(D),XP(i)
      • Refutation
        • S(f);P_SPINS(g)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B),XS(f)
    • Vars
      • S(f);N_GUARD,P_SPINS(g),SBLOCK,XS(D)::R(E)
      • S(f);P_SPINS(g)::S(D),XP(i)
      • S(f);N_GUARD,P_SPINS(g),S_CUTB(b)::QAR(B)
      • S(g);OGATE,P_SPINS(f)::R1(C),XS(f)
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