MESON Chess Problem Database

Problem Display
PID: 255931 (nKN5/2np3Q/p1kP4/B1p2Rp1/1P6/N2Pb3/8/6r1 w - - 0 1)

Sukhodolov, Nikolai

Zadachi i Etyudi, 2007

nKN5/2np3Q/p1kP4/B1p2Rp1/1P6/N2Pb3/8/6r1

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Rxc5#
    • 1...Bd2
      • 2.Rxc5#
    • 1...Bf4
      • 2.Rxc5#
  • Tries
    • 1.Sb6?
      • threat
        • 2.Qxd7#
      • 1...Kxd6
        • 2.Qxd7#
      • 1...Sxb6!
    • 1.Bxc7?
      • threat
        • 2.Sa7#
        • 2.Se7#
      • 1...cxb4
        • 2.Se7#
      • 1...c4
        • 2.Se7#
      • 1...Sxc7!
    • 1.Rd5?
      • threat
        • 2.Se7#
      • 1...Kxd5
        • 2.Qe4#
      • 1...Sxd5!
    • 1.Rf6?
      • threat
        • 2.Se7#
      • 1...Kd5
        • 2.Qe4#
      • 1...Sd5
        • 2.Sa7#
      • 1...Se6
        • 2.Qe4#
      • 1...cxb4!
    • 1.Qg6?
      • threat
        • 2.Sa7#
        • 2.Se7#
      • 1...cxb4
        • 2.Se7#
      • 1...Sb5
        • 2.Se7#
      • 1...Sd5
        • 2.Sa7#
      • 1...c4
        • 2.Se7#
      • 1...Se6!
    • 1.Qh2?
      • threat
        • 2.Sa7#
        • 2.Se7#
      • 1...cxb4
        • 2.Se7#
      • 1...Bf4
        • 2.Rxc5#
      • 1...Sb5
        • 2.Se7#
      • 1...Sd5
        • 2.Sa7#
      • 1...c4
        • 2.Se7#
      • 1...Rg3!
    • 1.Qh6?
      • threat
        • 2.Sa7#
        • 2.Se7#
      • 1...cxb4
        • 2.Se7#
      • 1...Sb5
        • 2.Se7#
      • 1...Sd5
        • 2.Sa7#
      • 1...c4
        • 2.Se7#
      • 1...Se6!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Sa7#
      • 1...Kb5
        • 2.Qxd7#
      • 1...cxb4
        • 2.Se7#
      • 1...Sb5
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(b);N_GUARD::R1(E),XP(c)
  • Tries
    • Try
      • S(I);
      • Threat
        • QAB1(G),XP(h)
      • Vars
        • K(f);P-FLIGHT,XP(F)::QAR1(G),XP(h)
      • Refutation
        • S(i);XS(I)
    • Try
      • B(D);XS(g)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XP(C)::S(I)
        • P(c);::S(I)
      • Refutation
        • S(i);XB(D)
    • Try
      • R(E);
      • Threat
        • S(I)
      • Vars
        • K(f);OGATEB,S_FLIGHT,XR(E)::QAB1(G)
      • Refutation
        • S(g);XR(E)
    • Try
      • R(E);
      • Threat
        • S(I)
      • Vars
        • K(f);S_CUTS(g),S_FLIGHT::QAB1(G)
        • S(g);SBLOCK::S(I)
        • S(g);N_GUARD::QAB(G)
      • Refutation
        • P(c);XP(C)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XP(C)::S(I)
        • S(g);::S(I)
        • P(c);::S(I)
      • Refutation
        • S(g);
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XP(C)::S(I)
        • B(b);N_GUARD::R1(E),XP(c)
        • S(g);::S(I)
        • P(c);::S(I)
      • Refutation
        • R(a);
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XP(C)::S(I)
        • S(g);::S(I)
        • P(c);::S(I)
      • Refutation
        • S(g);
  • Actual
    • S(A);
    • Threat
      • S(I)
    • Vars
      • K(f);N_GUARD,P_SPINP(c),S_FLIGHT::QAB(G),XP(h)
      • P(c);XP(C)::S(I)
      • S(g);SBLOCK::S(I)
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