MESON Chess Problem Database

Problem Display
PID: 86599 (3n2K1/8/2rP4/1p3ppB/1N1Bk3/3NP2R/6rn/Q7 w - - 0 1)

Novitski, Petr Adrinovich

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Probleemblad, 1987

3n2K1/8/2rP4/1p3ppB/1N1Bk3/3NP2R/6rn/Q7

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Sf2#
    • 1...Rf2
      • 2.Sxf2#
    • 1...Rg3
      • 2.Sf2#
    • 1...Rg4
      • 2.Sf2#
    • 1...Rc5
      • 2.Sxc5#
    • 1...Ra6
      • 2.Sc5#
    • 1...Rb6
      • 2.Sc5#
    • 1...Rxd6
      • 2.Sc5#
    • 1...Sf1
      • 2.Bf3#
    • 1...Sf3
      • 2.Bxf3#
    • 1...f4
      • 2.Bg6#
  • Tries
    • 1.Bc5?
      • threat
        • 2.Qd4#
        • 2.Qe5#
      • 1...Rxc5
        • 2.Sxc5#
        • 2.Qd4#
      • 1...Rxd6
        • 2.Qe5#
      • 1...f4
        • 2.Bg6#
        • 2.Qe5#
      • 1...Sf3
        • 2.Bxf3#
      • 1...Sg4
        • 2.Qd4#
      • 1...Se6
        • 2.Qe5#
      • 1...Sf7
        • 2.Qd4#
      • 1...Rb2!
    • 1.Qh1?
      • threat
        • 2.Sf2#
      • 1...f4
        • 2.Bg6#
      • 1...Sf3
        • 2.Bxf3#
      • 1...Sg4
        • 2.Qxg2#
      • 1...Rc2!
    • 1.Qa8?
      • threat
        • 2.Sc5#
      • 1...f4
        • 2.Bg6#
      • 1...Se6
        • 2.Qxc6#
      • 1...Sb7
        • 2.Qe8#
      • 1...Rc2!
  • Keys
    • 1.Qb1!
      • threat
        • 2.Sf2#
        • 2.Sc5#
      • 1...Rgc2
        • 2.Sf2#
      • 1...Rf2
        • 2.Sxf2#
        • 2.Sc5#
      • 1...Rcc2
        • 2.Sc5#
      • 1...Rc5
        • 2.Sf2#
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 11
  • Sets
    • R(a);N_GUARD::S(B)
    • R(a);N_GUARD::S(B),XR(a)
    • R(g);N_GUARD::S(B),XR(g)
    • R(g);N_GUARD::S(B)
    • R(g);N_GUARD,XP(H)::S(B)
    • S(b);N_GUARD::B(G)
    • S(b);N_GUARD::B(G),XS(b)
    • P(e);OGATEB::B(G)
  • Tries
    • Try
      • B(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(g);XP(H)::QAR1(A)
        • S(b);N_GUARD::B(G),XS(b)
        • S(b);::QAR1(A)
        • S(h);::QAR1(A)
      • Refutation
        • R(a);
    • Try
      • Q(A);P_PINR(a)
      • Threat
        • S(B)
      • Vars
        • P(e);OGATEB::B(G)
        • S(b);N_GUARD,N_SPINR(a)::B(G),XS(b)
        • S(b);N_GUARD::QAB(A),XR(a)
      • Refutation
        • R(g);
    • Try
      • Q(A);P_PINR(g)
      • Threat
        • S(B)
      • Vars
        • P(e);OGATEB::B(G)
        • S(h);N_GUARD::QAB(A),XR(g)
        • S(h);N_SPINR(g),OGATE::QAR(A)
      • Refutation
        • R(a);
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • R(a);::S(B)
      • R(g);::S(B)
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