MESON Chess Problem Database

Problem Display
PID: 252663 (2b5/1p1p4/1P1R4/1Q3Np1/1P1Pk1p1/2P1N1p1/5nKp/5Rbn w - - 0 1)

Sukhodolov, Nikolai

Zadachi i Etyudi, 2005

2b5/1p1p4/1P1R4/1Q3Np1/1P1Pk1p1/2P1N1p1/5nKp/5Rbn

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qe5#
    • 1...Sd3
      • 2.Qd5#
  • Tries
    • 1.Sc4?
      • 1...Kf4
        • 2.Qe5#
      • 1...Sh3
        • 2.Sd2#
      • 1...Sd1
        • 2.Sd2#
      • 1...Sd3
        • 2.Sd2#
        • 2.Qd5#
      • 1...Kd3!
    • 1.Re6+?
      • 1...Kf4
        • 2.Qe5#
      • 1...dxe6!
    • 1.Qe2?
      • 1...Kf4
        • 2.Qxg4#
      • 1...Sh3
        • 2.Qc2#
      • 1...Sd1
        • 2.Qc2#
      • 1...Sd3!
    • 1.Qd5+?
      • 1...Kf4
        • 2.Qe5#
      • 1...Kd3!
  • Keys
    • 1.Sd5!
      • 1...Kxf5
        • 2.Qd3#
      • 1...Sh3
        • 2.Sf6#
      • 1...Sd1
        • 2.Sf6#
      • 1...Sd3
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(f);N_GUARD,P-FLIGHT,P_SPINS(c)::QAB1(G)
    • S(c);SBLOCK::QAB1(G)
  • Tries
    • Try
      • S(D);
      • Vars
        • K(f);N_GUARD,P-FLIGHT,P_SPINS(c)::QAB1(G)
        • S(c);::S(D)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • R(J);CHECK
      • Vars
        • K(f);N_GUARD,P-FLIGHT,P_SPINS(c)::QAB1(G)
      • Refutation
        • P(j);XR(J)
    • Try
      • Q(G);
      • Vars
        • K(f);N_GUARD,P-FLIGHT,P_SPINS(c)::QAR1(G),XP(g)
        • S(c);N_GUARD::QAB(G)
      • Refutation
        • S(c);
    • Try
      • Q(G);CHECK
      • Vars
        • K(f);N_GUARD,P-FLIGHT,P_SPINS(c)::QAB1(G)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(f);N_GUARD,P_SPINS(c),S_FLIGHT,XS(H)::QAB(G)
      • S(c);::S(D)
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