MESON Chess Problem Database

Problem Display
PID: 268413 (Q6b/BR6/p1ppp3/3k2rp/B1N1NRnK/p2p2p1/3P4/q4n2 w - - 0 1)

Erokhin, Vladimir Alekseevich

Shakhmatnaya kompozitsiya, 1996

Q6b/BR6/p1ppp3/3k2rp/B1N1NRnK/p2p2p1/3P4/q4n2

#2

9 + 14

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc4
      • 2.Bb3#
  • Tries
    • 1.Bxc6+?
      • 1...Kxc4
        • 2.Sxd6#
      • 1...Kxc6!
    • 1.Rb2?
      • threat
        • 2.Qxc6#
      • 1...Kxc4
        • 2.Sf6#
      • 1...Se5
        • 2.Sc3#
      • 1...e5!
    • 1.Rb4?
      • threat
        • 2.Bxc6#
        • 2.Qxc6#
      • 1...Se5
        • 2.Sb6#
      • 1...e5!
    • 1.Rb5+?
      • 1...Kxc4
        • 2.Sxd6#
      • 1...axb5!
  • Keys
    • 1.Rg7!
      • threat
        • 2.Qxc6#
      • 1...Kxc4
        • 2.Sc3#
      • 1...e5
        • 2.Qg8#
      • 1...Se5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(g);OGATEB,S_FLIGHT,XS(C)::B(B)
  • Tries
    • Try
      • B(B);CHECK,XP(k)
      • Vars
        • K(g);N_GUARD,S_FLIGHT,XS(C)::R(E)+S(D),DCHECK,XP(l)
      • Refutation
        • K(g);S_FLIGHT,XB(B)
    • Try
      • R(H);P_PINP(k)
      • Threat
        • QAB1(I),XP(k)
      • Vars
        • K(g);N_SPINP(k),S_CUTB(n),S_CUTS(f),S_FLIGHT,XS(C)::R(E)+S(D)
        • S(f);S_CUTB(n)::S(D)
      • Refutation
        • P(m);
    • Try
      • R(H);P_PINP(k)
      • Threat
        • DUALS(2)
      • Vars
        • S(f);SBLOCK::S(C)
      • Refutation
        • P(m);
    • Try
      • R(H);CHECK,P_PINP(k)
      • Vars
        • K(g);N_SPINP(k),S_FLIGHT,XS(C)::R(E)+S(D),DCHECK,XP(l)
      • Refutation
        • P(j);XR(H)
  • Actual
    • R(H);P_PINP(k)
    • Threat
      • QAB1(I),XP(k)
    • Vars
      • K(g);N_SPINP(k),S_CUTQ(a),S_FLIGHT,XS(C)::R(E)+S(D)
      • P(m);OGATEB::QAB(I)
      • S(f);N_GUARD,S_CUTQ(a)::S(D)
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