MESON Chess Problem Database

Problem Display
PID: 136587 (6r1/5N2/4B3/5b1p/7k/4Q3/5N1K/4b3 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Neue Osnabrucker Zeitung, 1999

6r1/5N2/4B3/5b1p/7k/4Q3/5N1K/4b3

#2

5 + 5

14503 Problemschach-Jahrbuch (1999) 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Rg3
      • 2.Qxg3#
    • 1...Rg4
      • 2.Qh3#
    • 1...Rg5
      • 2.Qxg5#
    • 1...Ra8
      • 2.Qg5#
      • 2.Qg3#
    • 1...Rb8
      • 2.Qg5#
      • 2.Qg3#
    • 1...Rc8
      • 2.Qg5#
      • 2.Qg3#
    • 1...Rd8
      • 2.Qg5#
      • 2.Qg3#
    • 1...Re8
      • 2.Qg5#
      • 2.Qg3#
    • 1...Rf8
      • 2.Qg5#
      • 2.Qg3#
    • 1...Rh8
      • 2.Qg5#
      • 2.Qg3#
    • 1...Bb1
      • 2.Qh3#
    • 1...Bc2
      • 2.Qh3#
    • 1...Bd3
      • 2.Qh3#
    • 1...Bh3
      • 2.Qxh3#
    • 1...Be4
      • 2.Qh3#
    • 1...Bg4
      • 2.Qg3#
    • 1...Bg6
      • 2.Qf4#
      • 2.Qg5#
      • 2.Qg3#
      • 2.Qh3#
    • 1...Bh7
      • 2.Qh3#
  • Tries
    • 1.Bxf5?
      • threat
        • 2.Qh3#
      • 1...Rg3
        • 2.Qxg3#
      • 1...Rg2+!
    • 1.Qf4+?
      • 1...Bg4
        • 2.Qg3#
      • 1...Rg4!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Qh3#
      • 1...Bg3+
        • 2.Qxg3#
      • 1...Kxg4
        • 2.Qe4#
      • 1...Bxg4
        • 2.Qxe1#
      • 1...hxg4
        • 2.Qh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • R(e);N_GUARD::QAB1(C),XR(e)
    • R(e);S_CUTB(c)::QAR1(C)
    • B(c);N_GUARD::QAR1(C)
    • B(c);N_GUARD::QAR1(C),XB(c)
    • B(c);S_CUTR(e)::QAB1(C)
  • Tries
    • Try
      • B(D);XB(c)
      • Threat
        • QAR1(C)
      • Vars
        • R(e);N_GUARD::QAB1(C),XR(e)
      • Refutation
        • R(e);CHECK
    • Try
      • Q(C);CHECK
      • Vars
        • B(c);P_SPINB(c),S_CUTR(e)::QAB1(C)
      • Refutation
        • R(e);P_SPINR(e)
  • Actual
    • S(A);
    • Threat
      • QAR1(C)
    • Vars
      • B(a);CHECK,N_GUARD::QAB1(C),XB(a)
      • K(b);OGATEB,P-FLIGHT,P_SPINB(c),XS(A)::QAR2(C)
      • B(c);XS(A)::QAB(C),XB(a)
      • P(d);OGATEB,SBLOCK,XS(A)::QAR2(C)
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