MESON Chess Problem Database

Problem Display
PID: 229901 (8/n2pR3/2pp4/2N1PpK1/R1PkP3/3N1p2/pPp4p/1BQ4b w - - 0 1)

Storozhenko, Ivan Ivanovich

Zadachi i Etyudi, 2000

8/n2pR3/2pp4/2N1PpK1/R1PkP3/3N1p2/pPp4p/1BQ4b

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Sb5
      • 2.cxb5#
    • 1...dxe5
      • 2.Rxd7#
    • 1...d5
      • 2.cxd5#
  • Tries
    • 1.Sf2?
      • threat
        • 2.Sb3#
      • 1...Kxc5
        • 2.Qe3#
      • 1...dxc5
        • 2.Qd2#
      • 1...a1S!
    • 1.Sb3+?
      • 1...Kxe4
        • 2.Sf2#
      • 1...Kxd3!
    • 1.Rxd7?
      • threat
        • 2.Rxd6#
      • 1...Sb5
        • 2.cxb5#
      • 1...d5
        • 2.cxd5#
      • 1...Sc8!
  • Keys
    • 1.Qf4!
      • threat
        • 2.exf5#
      • 1...fxe4
        • 2.Qxe4#
      • 1...dxc5
        • 2.Rxd7#
      • 1...dxe5
        • 2.Rxd7#
      • 1...c1Q
        • 2.Sb3#
      • 1...c1B
        • 2.Sb3#
      • 1...f2
        • 2.Qxf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • S(j);OGATE::R(E)+P(F),XS(j)
    • P(i);OGATEB,XP(I)::R(K),XP(k)
    • P(i);OGATE::R(E)+P(F),XP(i)
  • Tries
    • Try
      • S(D);
      • Threat
        • S(H)
      • Vars
        • K(f);S_FLIGHT,XS(H)::QAB(B)
        • P(i);SBLOCK,XS(H)::QAR2(B)
      • Refutation
        • P(b);
    • Try
      • S(H);CHECK
      • Vars
        • K(f);P-FLIGHT,XP(G)::S(D)
      • Refutation
        • K(f);P-FLIGHT,P_SPINP(c),XS(D)
    • Try
      • R(K);P_PINP(i),XP(k)
      • Threat
        • R(K),XP(i)
      • Vars
        • S(j);OGATE::R(E)+P(F),XS(j)
        • P(i);OGATE::R(E)+P(F),XP(i)
      • Refutation
        • S(j);
  • Actual
    • Q(B);
    • Threat
      • QAR(B)+P(G),XP(g)
    • Vars
      • P(g);OGATE,P_SPINP(g),XP(G)::QAR1(B),XP(g)
      • P(i);OGATEB,XS(H)::R(K),XP(k)
      • P(i);OGATEB,XP(I)::R(K),XP(k)
      • P(c);P_PINQ(B)::S(H)
      • P(e);OGATE::QAB(B),XP(e)
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