MESON Chess Problem Database

Problem Display
PID: 235426 (2Q5/4R3/1p6/rr2P1N1/nP1kPN2/p7/1n1P4/5BKb w - - 0 1)

Pituk, Alexander

Problemas, 1977

2Q5/4R3/1p6/rr2P1N1/nP1kPN2/p7/1n1P4/5BKb

#2

10 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qc4#
    • 1...Sd3
      • 2.Se2#
    • 1...Sc4
      • 2.Qxc4#
    • 1...Sc3
      • 2.Qxc3#
  • Tries
    • 1.Qh3?
      • threat
        • 2.Qe3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sd1
        • 2.Qd3#
      • 1...Sc4
        • 2.Se2#
        • 2.Qd3#
      • 1...Bf3!
    • 1.Qc7?
      • threat
        • 2.Sfe6#
      • 1...Bxe4
        • 2.Sge6#
      • 1...Sc5
        • 2.Qd6#
      • 1...Rxe5!
    • 1.Qh8?
      • threat
        • 2.Sfe6#
      • 1...Bxe4
        • 2.Sge6#
      • 1...Sc5
        • 2.e6#
      • 1...Sd3!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Se2#
      • 1...Bxe4
        • 2.Qxe4#
      • 1...Bf3
        • 2.Sxf3#
      • 1...Sc3
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(b);N_GUARD::QAR1(J)
    • S(b);SBLOCK::S(F)
    • S(b);N_GUARD::QAR1(J),XS(b)
    • S(d);N_GUARD::QAB1(J),XS(d)
  • Tries
    • Try
      • Q(J);
      • Threat
        • QAB1(J)
      • Vars
        • S(b);N_GUARD::QAR1(J),XS(b)
        • S(b);N_GUARD::QAR1(J)
      • Refutation
        • B(a);
    • Try
      • Q(J);
      • Threat
        • S(F)
      • Vars
        • B(a);SBLOCK,XP(E)::S(H)
        • S(d);S_CUTR(g)::QAR2(J)
      • Refutation
        • R(g);XP(G)
    • Try
      • Q(J);
      • Threat
        • S(F)
      • Vars
        • B(a);SBLOCK,XP(E)::S(H)
        • S(d);S_CUTR(g)::QAB(J)+P(G)
      • Refutation
        • S(b);
  • Actual
    • Q(J);
    • Threat
      • S(F)
    • Vars
      • B(a);OGATE,XP(E)::QAR1(J),XB(a)
      • B(a);N_GUARD::S(H),XB(a)
      • S(d);N_GUARD::QAB1(J),XS(d)
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