MESON Chess Problem Database

Problem Display
PID: 275433 (7Q/3p2p1/3K2R1/4Np2/5PP1/1P2k1p1/NR4P1/1B6 w - - 0 1)

Surkov, Ruslan Albertovich

Phenix, 2000

7Q/3p2p1/3K2R1/4Np2/5PP1/1P2k1p1/NR4P1/1B6

#2

11 + 5

SOLUTION

  • SOUND
  • Tries
    • 1.Sc4+?
      • 1...Kd4
        • 2.Rd2#
        • 2.Qxg7#
      • 1...Kxf4!
    • 1.Re2+?
      • 1...Kd4
        • 2.Sf3#
      • 1...Kxf4
        • 2.Sd3#
      • 1...Kxe2!
    • 1.Qxg7?
      • 1...Kd4
        • 2.Sc4#
      • 1...Kxf4
        • 2.Qh6#
      • 1...fxg4!
    • 1.Qh1?
      • 1...Kd4
        • 2.Qg1#
      • 1...Kxf4
        • 2.Qc1#
      • 1...fxg4!
    • 1.Qc8?
      • 1...Kd4
        • 2.Qc3#
        • 2.Qc5#
      • 1...Kxf4
        • 2.Qc1#
      • 1...fxg4!
    • 1.Qd8?
      • 1...Kd4
        • 2.Qb6#
      • 1...Kxf4
        • 2.Qg5#
      • 1...fxg4!
    • 1.Qe8?
      • 1...Kd4
        • 2.Sf3#
      • 1...Kxf4
        • 2.Sd3#
      • 1...fxg4!
  • Keys
    • 1.Qa8!
      • 1...Kd4
        • 2.Qa7#
      • 1...Kxf4
        • 2.Qf3#
      • 1...fxg4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(H);CHECK
      • Refutation
        • K(a);S_FLIGHT,XP(F)
    • Try
      • R(C);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::S(H)
        • K(a);N_GUARD,S_FLIGHT,XP(F)::S(H)
      • Refutation
        • K(a);P-FLIGHT,XR(C)
    • Try
      • Q(K);XP(e)
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB(K)+S(H)
        • K(a);OGATEB,S_FLIGHT,XP(F)::QAB(K)
      • Refutation
        • P(c);XP(G)
    • Try
      • Q(K);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB(K)
        • K(a);N_GUARD,S_FLIGHT,XP(F)::QAB(K)
      • Refutation
        • P(c);XP(G)
    • Try
      • Q(K);
      • Vars
        • K(a);N_GUARD,S_FLIGHT,XP(F)::QAB(K)
      • Refutation
        • P(c);XP(G)
    • Try
      • Q(K);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB(K)
        • K(a);OGATEB,S_FLIGHT,XP(F)::QAB1(K)
      • Refutation
        • P(c);XP(G)
    • Try
      • Q(K);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::S(H)
        • K(a);N_GUARD,S_FLIGHT,XP(F)::S(H)
      • Refutation
        • P(c);XP(G)
  • Actual
    • Q(K);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAB(K)
      • K(a);N_GUARD,S_FLIGHT,XP(F)::QAR1(K)
      • P(c);N_GUARD,XP(G)::QAR1(K)
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