MESON Chess Problem Database

Problem Display
PID: 109279 (8/1p1Q4/1Rp1K3/B1p5/2kP4/8/1n6/1B6 w - - 0 1)

Ruszczynski, Piotr

Chervoni Girnik, 1979

8/1p1Q4/1Rp1K3/B1p5/2kP4/8/1n6/1B6

#2

6 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.Ba2#
  • Tries
    • 1.Ke5?
      • threat
        • 2.Qe6#
        • 2.Qf7#
      • 1...cxd4
        • 2.Qxd4#
      • 1...Sd3+!
    • 1.Qxc6?
      • threat
        • 2.Qd5#
        • 2.Qxc5#
      • 1...Kxd4
        • 2.Qe4#
      • 1...Sd3
        • 2.Qd5#
      • 1...Sa4
        • 2.Qxa4#
        • 2.Qd5#
      • 1...bxc6!
    • 1.Qd6?
      • threat
        • 2.Qxc5#
      • 1...cxd4
        • 2.Qb4#
      • 1...Sd3
        • 2.Ba2#
      • 1...Sa4!
    • 1.Qf7?
      • threat
        • 2.Ke5#
      • 1...Kxd4
        • 2.Qf4#
      • 1...cxd4
        • 2.Kd6#
      • 1...Sd3!
  • Keys
    • 1.Qh7!
      • 1...Kxd4
        • 2.Qe4#
      • 1...cxd4
        • 2.Qc2#
      • 1...Sd1
        • 2.Qd3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sa4
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);SBLOCK::B(A)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATE,XP(B)::QAR1(F),XP(c)
      • Refutation
        • S(a);CHECK
    • Try
      • Q(F);P_PINP(c),XP(d)
      • Threat
        • DUALS(2)
      • Vars
        • K(b);N_SPINP(c),OGATEB,P-FLIGHT,XP(B)::QAR1(F)
        • S(a);::QAB1(F)
      • Refutation
        • P(e);N_SPINP(c),XQ(F)
    • Try
      • Q(F);
      • Threat
        • QAR1(F),XP(c)
      • Vars
        • P(c);OGATE,SBLOCK,XP(B)::QAR1(F)
        • S(a);SBLOCK::B(A)
      • Refutation
        • S(a);
    • Try
      • Q(F);
      • Threat
        • QAB(F)+K(E)
      • Vars
        • K(b);OGATEB,P-FLIGHT,XP(B)::QAR2(F)
        • P(c);SBLOCK,XP(B)::QAB(F)+K(E)
      • Refutation
        • S(a);
  • Actual
    • Q(F);
    • Vars
      • K(b);OGATEB,P-FLIGHT,XP(B)::QAR1(F)
      • P(c);SBLOCK,XP(B)::QAR2(F)
      • S(a);N_GUARD::QAB1(F)
      • S(a);N_GUARD::QAB1(F),XS(a)
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