MESON Chess Problem Database

Problem Display
PID: 259705 (8/1N2np2/pRB2P2/8/nbk1p3/4P2Q/2P3K1/1N6 w - - 0 1)

Savchenko, V?

Comm., Trud, 1950

8/1N2np2/pRB2P2/8/nbk1p3/4P2Q/2P3K1/1N6

#2

9 + 7

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bc3
      • 2.Sa3#
    • 1...Bc5
      • 2.Sa5#
    • 1...Sc3
      • 2.Sd2#
    • 1...Sc5
      • 2.Sd6#
  • Tries
    • 1.Qg4?
      • threat
        • 2.Qe2#
        • 2.Qxe4#
      • 1...Sb2
        • 2.Qxe4#
      • 1...Bc3
        • 2.Sa3#
        • 2.Qe2#
      • 1...Bc5
        • 2.Sa5#
        • 2.Qe2#
      • 1...Sc3
        • 2.Sd2#
      • 1...Sc5
        • 2.Sd6#
      • 1...Sf5
        • 2.Qe2#
      • 1...Sxc6!
    • 1.Qe6+?
      • 1...Sd5
        • 2.Bxd5#
        • 2.Qxd5#
        • 2.Qxe4#
      • 1...fxe6!
    • 1.Qd7?
      • threat
        • 2.Qd4#
      • 1...Sxc6
        • 2.Qxf7#
      • 1...Bc3
        • 2.Sa3#
      • 1...Bc5
        • 2.Sa5#
      • 1...Sd5
        • 2.Bxd5#
        • 2.Qxd5#
      • 1...Sf5
        • 2.Bd5#
        • 2.Qd5#
        • 2.Qxf7#
      • 1...Bd6!
    • 1.Qh5?
      • threat
        • 2.Qe2#
      • 1...Sxc6
        • 2.Qxf7#
      • 1...Sc3
        • 2.Sd2#
      • 1...Sc5
        • 2.Sd6#
      • 1...Sb2!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Qxe4#
      • 1...Sxc6
        • 2.Qxf7#
      • 1...Bc3
        • 2.Sa3#
      • 1...Bc5
        • 2.Sa5#
      • 1...Sc3
        • 2.Sd2#
      • 1...Sc5
        • 2.Sd6#
      • 1...Sf5
        • 2.Qxf7#
      • 1...Sg6
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(b);N_GUARD,SBLOCK::S(A)
    • B(b);N_GUARD,SBLOCK::S(I)
    • S(a);SBLOCK,S_CUTB(b)::S(A)
    • S(a);SBLOCK,S_CUTB(b)::S(I)
  • Tries
    • Try
      • Q(E);P_PINP(d)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAR2(E),XP(d)
        • S(a);SBLOCK,S_CUTB(b)::S(A)
        • S(a);SBLOCK,S_CUTB(b)::S(I)
        • S(f);::QAB(E)
      • Refutation
        • S(f);XB(G)
    • Try
      • Q(E);CHECK
      • Refutation
        • P(g);XQ(E)
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • S(f);OGATE,XB(G)::QAB(E),XP(g)
        • B(b);N_GUARD,SBLOCK::S(A)
        • B(b);N_GUARD,SBLOCK::S(I)
      • Refutation
        • B(b);
    • Try
      • Q(E);
      • Threat
        • QAB(E)
      • Vars
        • S(f);N_GUARD,XB(G)::QAB(E),XP(g)
        • S(a);SBLOCK,S_CUTB(b)::S(A)
        • S(a);S_CUTB(b)::S(I)
      • Refutation
        • S(a);
  • Actual
    • Q(E);
    • Threat
      • QAR2(E),XP(d)
    • Vars
      • S(f);N_GUARD,XB(G)::QAB(E),XP(g)
      • B(b);N_GUARD,SBLOCK::S(A)
      • B(b);N_GUARD,SBLOCK::S(I)
      • S(a);SBLOCK,S_CUTB(b)::S(A)
      • S(a);SBLOCK,S_CUTB(b)::S(I)
      • S(f);N_GUARD::QAB(E),XP(g)
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