MESON Chess Problem Database

Problem Display
PID: 67807 (B1Rrn3/2b2N2/R7/p1k2p2/Ppnp1p2/1Q1p1p1N/7K/8 w - - 0 1)

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

7th Comm., Phenix, 1994

B1Rrn3/2b2N2/R7/p1k2p2/Ppnp1p2/1Q1p1p1N/7K/8

#2

8 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Rc6#
    • 1...Sb2
      • 2.Rc6#
    • 1...Sd2
      • 2.Rc6#
    • 1...Sa3
      • 2.Rc6#
    • 1...Se3
      • 2.Rc6#
    • 1...Sb6
      • 2.Rxa5#
    • 1...Scd6
      • 2.Rc6#
      • 2.Qd5#
    • 1...Sed6
      • 2.Rxc7#
    • 1...Sf6
      • 2.Rxc7#
    • 1...Sg7
      • 2.Rxc7#
  • Tries
    • 1.Sf2?
      • threat
        • 2.Sxd3#
      • 1...Sb2
        • 2.Rc6#
      • 1...d2
        • 2.Sd3#
      • 1...Se5!
    • 1.Shg5?
      • threat
        • 2.Se6#
      • 1...Sg7
        • 2.Rxc7#
      • 1...Rd6!
    • 1.Sxd8?
      • threat
        • 2.Se6#
      • 1...Sg7
        • 2.Rxc7#
      • 1...Sb6!
    • 1.Rxa5+?
      • 1...Kb6
        • 2.Qxb4#
      • 1...Sxa5!
  • Keys
    • 1.Sxf4!
      • threat
        • 2.Rc6#
      • 1...Rd6
        • 2.Sxd3#
      • 1...Se5
        • 2.Se6#
      • 1...Sb6
        • 2.Rxa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • R(k);SBLOCK::R1(E)
    • S(d);::R1(E)
    • S(d);N_GUARD,SBLOCK::R(E),XP(g)
    • S(l);N_GUARD::R(H),XB(j)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C),XP(a)
      • Vars
        • S(d);::R1(E)
        • P(a);::S(C)
      • Refutation
        • S(d);
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • S(l);N_GUARD::R(H),XB(j)
      • Refutation
        • R(k);
    • Try
      • S(F);XR(k)
      • Threat
        • S(F)
      • Vars
        • S(l);N_GUARD::R(H),XB(j)
      • Refutation
        • S(d);
    • Try
      • R(E);CHECK,XP(g)
      • Vars
        • K(h);N_SPINB(j),P_SPINP(c),S_FLIGHT::QAR2(B),XP(c)
      • Refutation
        • S(d);XR(E)
  • Actual
    • S(C);P_SPINS(C),XP(f)
    • Threat
      • R1(E)
    • Vars
      • R(k);N_PINS(C)::S(C),XP(a)
      • S(d);N_PINS(C)::S(C)
      • S(d);N_GUARD,SBLOCK::R(E),XP(g)
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