MESON Chess Problem Database

Problem Display
PID: 61918 (qr3n2/4B3/pp1N1p2/4k3/2Rp1N1n/K1p1P3/6Q1/8 w - - 0 1)

Markovsky, Grigory F

1st Prize, Levelezesi Sakkhirado, 1981

qr3n2/4B3/pp1N1p2/4k3/2Rp1N1n/K1p1P3/6Q1/8

#2

7 + 10

3752 FIDE Album (1980-1982) 1988

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Qxe4#
    • 1...Qd5
      • 2.Qxd5#
    • 1...Qa7
      • 2.Qe4#
      • 2.Qd5#
    • 1...Rb7
      • 2.Qe4#
      • 2.Qd5#
    • 1...Sf5
      • 2.Sf7#
    • 1...Se6
      • 2.Sd3#
    • 1...f5
      • 2.Sf7#
      • 2.Qg7#
  • Tries
    • 1.Rc5+?
      • 1...Qd5
        • 2.Rxd5#
        • 2.Qe4#
        • 2.Qxd5#
      • 1...bxc5!
    • 1.Qc2?
      • threat
        • 2.Sf7#
      • 1...Qe4
        • 2.Qxe4#
      • 1...d3
        • 2.Qxc3#
      • 1...Qd5!
    • 1.Qg5+?
      • 1...Sf5
        • 2.Qxf6#
        • 2.Qxf5#
        • 2.exd4#
      • 1...f5
        • 2.Qf6#
        • 2.Qg7#
        • 2.exd4#
      • 1...fxg5!
    • 1.Qg8?
      • threat
        • 2.Sd3#
      • 1...Se6
        • 2.Qxe6#
      • 1...d3
        • 2.Sxd3#
      • 1...Qe4!
  • Keys
    • 1.Qg4!
      • threat
        • 2.exd4#
      • 1...dxe3
        • 2.Sf7#
      • 1...Qe4
        • 2.Sf7#
      • 1...Qd5
        • 2.Sd3#
      • 1...Sf3
        • 2.Qf5#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Se6
        • 2.Qxe6#
      • 1...d3
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(h);N_GUARD::QAR1(A),XQ(h)
    • S(c);SBLOCK::S(F)
    • S(j);SBLOCK::S(E)
  • Tries
    • Try
      • R(D);CHECK
      • Refutation
        • P(f);XR(D)
    • Try
      • Q(A);
      • Threat
        • S(F)
      • Vars
        • Q(h);N_GUARD::QAR1(A),XQ(h)
        • P(b);OGATEB::QAB(A),XP(a)
      • Refutation
        • Q(h);
    • Try
      • Q(A);CHECK
      • Refutation
        • P(g);XQ(A)
    • Try
      • Q(A);
      • Threat
        • S(E)
      • Vars
        • S(j);N_GUARD::QAR1(A),XS(j)
        • P(b);::S(E),XP(b)
      • Refutation
        • Q(h);
  • Actual
    • Q(A);
    • Threat
      • P(C),XP(b)
    • Vars
      • P(b);XP(C)::S(F)
      • Q(h);SBLOCK::S(F)
      • Q(h);SBLOCK::S(E)
      • S(c);N_GUARD::QAR1(A)
      • S(c);N_GUARD::QAR1(A),XS(c)
      • S(j);N_GUARD::QAR1(A),XS(j)
      • P(b);::S(F)
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