MESON Chess Problem Database

Problem Display
PID: 265414 (1BBRNQ2/8/K1p3p1/R3N1Pr/2p1k1p1/4p3/4n3/4n3 w - - 0 1)

Borisenko, Alexey Ivanovich

Zadachi i Etyudi, 2010

1BBRNQ2/8/K1p3p1/R3N1Pr/2p1k1p1/4p3/4n3/4n3

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sd4
      • 2.Sd6#
    • 1...Sf4
      • 2.Sf6#
    • 1...c5
      • 2.Bb7#
  • Tries
    • 1.Sxc6?
      • threat
        • 2.Re5#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sd3
        • 2.Sd6#
      • 1...Sf3
        • 2.Sf6#
      • 1...Rxg5!
    • 1.Rd1?
      • threat
        • 2.Sd6#
      • 1...c5
        • 2.Bb7#
      • 1...Sd3!
    • 1.Rd4+?
      • 1...Sxd4
        • 2.Sd6#
      • 1...Kxd4!
    • 1.Qf4+?
      • 1...Sxf4
        • 2.Sf6#
      • 1...Kxf4!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Re5#
      • 1...Rxg5
        • 2.Sxg5#
      • 1...Sxf3
        • 2.Sf6#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sd3
        • 2.Sd6#
      • 1...c5
        • 2.Bb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::S(H)
    • P(h);OGATEB::B(F)
  • Tries
    • Try
      • S(B);XP(h)
      • Threat
        • R1(A)
      • Vars
        • S(b);N_GUARD::R1(G),XS(b)
        • S(b);N_GUARD::QAR1(I),XS(b)
        • S(a);SBLOCK::S(H)
      • Refutation
        • R(g);XP(C)
    • Try
      • R(G);
      • Threat
        • S(H)
      • Vars
        • P(h);OGATEB::B(F)
      • Refutation
        • S(a);
    • Try
      • R(G);CHECK
      • Vars
        • S(b);SBLOCK,XR(G)::S(H)
      • Refutation
        • K(e);P-FLIGHT,XR(G)
    • Try
      • Q(I);CHECK
      • Vars
        • S(b);SBLOCK,XQ(I)::S(H)
      • Refutation
        • K(e);P-FLIGHT,XQ(I)
  • Actual
    • S(B);
    • Threat
      • R1(A)
    • Vars
      • R(g);XP(C)::S(B),XR(g)
      • S(a);SBLOCK,XS(B)::S(H)
      • S(b);N_GUARD::R1(G),XS(b)
      • S(b);N_GUARD::QAR1(I),XS(b)
      • S(a);SBLOCK::S(H)
      • P(h);OGATEB::B(F)
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