MESON Chess Problem Database

Problem Display
PID: 99083 (7Q/B7/6nq/6p1/r2pp2p/1PNkN3/pP6/R3K3 w Q - 0 1)

Dyachuk, Vasyl Vasilovich

Sakkelet, 1993

7Q/B7/6nq/6p1/r2pp2p/1PNkN3/pP6/R3K3

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.Qxd4#
    • 1...Ra5
      • 2.Qxd4#
    • 1...Ra6
      • 2.Qxd4#
    • 1...dxc3
      • 2.Rd1#
      • 2.Qxc3#
    • 1...dxe3
      • 2.0-0-0#
  • Tries
    • 1.Scd5?
      • threat
        • 2.Rd1#
      • 1...dxe3
        • 2.Qc3#
      • 1...Qh5!
    • 1.Sg4?
      • threat
        • 2.0-0-0#
      • 1...dxc3
        • 2.Qxc3#
      • 1...Kc2!
    • 1.Qe5?
      • threat
        • 2.Qxe4#
      • 1...Kxe3
        • 2.Qxe4#
      • 1...dxc3
        • 2.Rd1#
        • 2.Qxc3#
      • 1...dxe3
        • 2.0-0-0#
      • 1...Sxe5!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Qxe4#
      • 1...Kxe3
        • 2.Qxe4#
      • 1...dxc3
        • 2.Rd1#
      • 1...dxe3
        • 2.0-0-0#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(c);N_GUARD::QAR1(H),XP(d)
    • P(d);XS(F)::0-0-0
  • Tries
    • Try
      • S(E);
      • Threat
        • R(A)
      • Vars
        • P(d);OGATE,XS(F)::QAR1(H)
      • Refutation
        • Q(i);
    • Try
      • S(F);
      • Threat
        • 0-0-0
      • Vars
        • P(d);OGATE,XS(E)::QAR1(H),XP(d)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(H);
      • Threat
        • QAB1(H),XP(e)
      • Vars
        • K(b);P-FLIGHT,P_SPINP(d),XS(F)::QAR1(H),XP(e)
        • P(d);XS(F)::0-0-0
      • Refutation
        • S(h);XQ(H)
  • Actual
    • Q(H);
    • Threat
      • QAB1(H),XP(e)
    • Vars
      • K(b);P-FLIGHT,P_SPINP(d),XS(F)::QAR1(H),XP(e)
      • P(d);XS(E)::R(A)
      • P(d);XS(F)::0-0-0
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