MESON Chess Problem Database

Problem Display
PID: 86872 (3b4/1p1R2pb/4Qp2/2RK3B/1p6/3kp3/1n2N1n1/2B5 w - - 0 1)

Dyadchenko, Grigory P

Ukrainian Championship, 1975

3b4/1p1R2pb/4Qp2/2RK3B/1p6/3kp3/1n2N1n1/2B5

#2

7 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Be4+
      • 2.Qxe4#
    • 1...Bf5
      • 2.Qxf5#
    • 1...Se1
      • 2.Sf4#
      • 2.Qxe3#
    • 1...Sf4+
      • 2.Sxf4#
    • 1...Sh4
      • 2.Sf4#
      • 2.Qxe3#
    • 1...b3
      • 2.Rc3#
    • 1...f5
      • 2.Ke5#
    • 1...b5
      • 2.Kc6#
    • 1...b6
      • 2.Kc6#
    • 1...g6
      • 2.Qe4#
  • Tries
    • 1.Qg4?
      • threat
        • 2.Ke6#
        • 2.Qd4#
      • 1...Be4+
        • 2.Qxe4#
      • 1...Sf4+
        • 2.Sxf4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Bf5
        • 2.Qxf5#
        • 2.Qd4#
      • 1...Bc7
        • 2.Qd4#
      • 1...Be7
        • 2.Qd4#
      • 1...Bg8+!
  • Keys
    • 1.Kd6!
      • threat
        • 2.Qd5#
      • 1...Bc7+
        • 2.Kxc7#
      • 1...Be7+
        • 2.Kxe7#
      • 1...Sc4+
        • 2.Qxc4#
      • 1...Be4
        • 2.Qb3#
      • 1...Bg8
        • 2.Qf5#
      • 1...Sf4
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • B(i);CHECK,N_GUARD::QAB1(F),XB(i)
    • B(i);N_GUARD::QAB(F),XB(i)
    • S(b);CHECK,N_GUARD::S(B),XS(b)
    • P(e);N_GUARD::R1(C)
    • P(f);::R(G)+K(D)
    • P(g);::R(G)+K(D)
    • P(h);S_CUTB(i)::QAB1(F)
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • B(i);CHECK,N_GUARD::QAB1(F),XB(i)
        • S(b);CHECK,N_GUARD::S(B),XS(b)
        • S(a);N_GUARD::QAB1(F),XS(a)
        • B(j);::QAR1(F)
      • Refutation
        • B(i);CHECK
  • Actual
    • K(D);P-FLIGHT
    • Threat
      • QAR2(F)
    • Vars
      • B(j);CHECK::R(G)+K(D),XB(j)
      • S(a);CHECK,N_GUARD::QAB1(F),XS(a)
      • B(i);SBLOCK::QAR2(F)
      • B(i);N_GUARD::QAB(F)
      • S(b);N_GUARD::QAR1(F),XP(d)
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Developed and maintained by Brian Stephenson.
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