MESON Chess Problem Database

Problem Display
PID: 268200 (1K3Q2/6p1/b3p3/1n1Pk2N/1p4P1/4nBb1/3R1B2/2N3q1 w - - 0 1)

Sushkov, Yuri Akimovich

Probleemblad, 1985

1K3Q2/6p1/b3p3/1n1Pk2N/1p4P1/4nBb1/3R1B2/2N3q1

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc1
      • 2.Bxg3#
    • 1...Qd1
      • 2.Bxg3#
    • 1...Qf1
      • 2.Bxg3#
    • 1...Qh1
      • 2.Bxg3#
    • 1...Bxf2
      • 2.Qf4#
    • 1...Bf4
      • 2.Qxf4#
    • 1...Bh4
      • 2.Qf4#
    • 1...Sd1
      • 2.Sd3#
    • 1...Sf1
      • 2.Sd3#
    • 1...Sc2
      • 2.Sd3#
    • 1...Sg2
      • 2.Sd3#
    • 1...Sc4
      • 2.Sd3#
    • 1...Sxg4
      • 2.Sd3#
    • 1...Sxd5
      • 2.Sd3#
    • 1...Sf5
      • 2.Sd3#
    • 1...Sd6
      • 2.Qxg7#
    • 1...exd5
      • 2.Qe7#
  • Tries
    • 1.Qe7?
      • threat
        • 2.Qxe6#
      • 1...Sxd5
        • 2.Sd3#
        • 2.Rxd5#
      • 1...Sd4
        • 2.Qc7#
      • 1...Sc7
        • 2.Qxc7#
      • 1...Bc8!
    • 1.d6?
      • threat
        • 2.Qxg7#
      • 1...Sxg4
        • 2.Sd3#
      • 1...Bh4
        • 2.Qf4#
      • 1...Sd5
        • 2.Sd3#
      • 1...Sf5
        • 2.Sd3#
      • 1...g5
        • 2.Qg7#
        • 2.Qf6#
        • 2.Qh8#
      • 1...g6
        • 2.Qg7#
        • 2.Qf6#
        • 2.Qh8#
      • 1...Sd4!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Sd3#
      • 1...Qxc1
        • 2.Bxg3#
      • 1...Sxg4
        • 2.d6#
      • 1...exd5
        • 2.Qe7#
      • 1...Qf1
        • 2.Bxg3#
      • 1...Sa3
        • 2.Qc7#
      • 1...Sc3
        • 2.Qc7#
      • 1...Sd4
        • 2.Qc7#
      • 1...Sd6
        • 2.Qd4#
      • 1...Sa7
        • 2.Qc7#
      • 1...Sc7
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 12
  • Sets
    • Q(a);N_GUARD,XS(A)::B(C),XB(c)
    • Q(a);N_GUARD::B(C),XB(c)
    • B(c);N_GUARD,XB(C)::QAB1(I)
    • B(c);N_GUARD::QAB1(I),XB(c)
    • B(c);N_GUARD::QAB1(I)
    • S(b);::S(A)
    • S(b);XP(E)::S(A)
    • S(b);XP(F)::S(A)
    • S(e);SBLOCK::QAB(I),XP(i)
    • P(h);OGATEB,XP(F)::QAR2(I)
  • Tries
    • Try
      • Q(I);P_PINP(h)
      • Threat
        • QAR1(I),XP(h)
      • Vars
        • S(e);N_GUARD::QAB(I)
        • S(e);N_GUARD::QAB(I),XS(e)
      • Refutation
        • B(g);
    • Try
      • P(F);
      • Threat
        • QAB(I),XP(i)
      • Vars
        • S(b);XP(E)::S(A)
        • B(c);N_GUARD::QAB1(I)
        • S(b);::S(A)
      • Refutation
        • S(e);
  • Actual
    • Q(I);
    • Threat
      • S(A)
    • Vars
      • Q(a);N_GUARD,XS(A)::B(C),XB(c)
      • S(b);N_GUARD,XP(E)::QAR(I)+P(F)
      • P(h);OGATEB,P_SPINP(h),XP(F)::QAR2(I)
      • Q(a);N_GUARD::B(C),XB(c)
      • S(e);N_GUARD::QAB(I)
      • S(e);N_GUARD,SBLOCK::QAB1(I)
      • S(e);N_GUARD::QAB(I),XS(e)
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