MESON Chess Problem Database

Problem Display
PID: 251248 (3N4/p2p3p/Q2P2pP/P5K1/PB1k2N1/8/pp1p4/rrbB4 w - - 0 1)

Udartsev, Valentin Filipovich

Probleemblad, 1982

3N4/p2p3p/Q2P2pP/P5K1/PB1k2N1/8/pp1p4/rrbB4

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qc4#
    • 1...Kd5
      • 2.Qd3#
  • Tries
    • 1.Kf4?
      • 1...Kd5
        • 2.Qd3#
      • 1...g5+!
    • 1.Kf6?
      • 1...Ke4
        • 2.Qc4#
      • 1...Kd5
        • 2.Qd3#
      • 1...g5!
    • 1.Sb7?
      • 1...Ke4
        • 2.Qc4#
      • 1...Kd5!
    • 1.Sf7?
      • 1...Ke4
        • 2.Qc4#
      • 1...Kd5!
    • 1.Ba3?
      • 1...Ke4
        • 2.Qc4#
      • 1...Kd5
        • 2.Qd3#
      • 1...Kc3!
    • 1.Qf1?
      • 1...Ke4
        • 2.Qc4#
      • 1...Kd5
        • 2.Qd3#
      • 1...a6!
    • 1.Qe2?
      • 1...Kd5
        • 2.Qd3#
      • 1...a6!
    • 1.Qb5?
      • 1...Ke4
        • 2.Qc4#
      • 1...a6!
    • 1.Qb7?
      • 1...Kd3
        • 2.Qd5#
      • 1...Kc4
        • 2.Qe4#
      • 1...a6!
  • Keys
    • 1.Sf6!
      • 1...Ke3
        • 2.Bc5#
      • 1...Ke5
        • 2.Bc3#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(g);N_GUARD,P-FLIGHT::QAR2(G)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(g);N_GUARD,P-FLIGHT::QAR2(G)
      • Refutation
        • P(h);CHECK
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(g);N_GUARD,P-FLIGHT::QAR2(G)
      • Refutation
        • P(h);
    • Try
      • S(J);
      • Vars
        • K(g);N_GUARD,P-FLIGHT::QAR2(G)
      • Refutation
        • K(g);P-FLIGHT
    • Try
      • S(J);
      • Vars
        • K(g);N_GUARD,P-FLIGHT::QAR2(G)
      • Refutation
        • K(g);P-FLIGHT
    • Try
      • B(C);
      • Vars
        • K(g);N_GUARD,P-FLIGHT::QAR2(G)
      • Refutation
        • K(g);S_FLIGHT
    • Try
      • Q(G);
      • Vars
        • K(g);N_GUARD,P-FLIGHT::QAR2(G)
      • Refutation
        • P(i);
    • Try
      • Q(G);
      • Vars
        • K(g);N_GUARD,P-FLIGHT::QAR2(G)
      • Refutation
        • P(i);
    • Try
      • Q(G);
      • Vars
        • K(g);N_GUARD,P-FLIGHT::QAR2(G)
      • Refutation
        • P(i);
    • Try
      • Q(G);
      • Vars
        • K(g);N_GUARD,P-FLIGHT::QAR2(G)
      • Refutation
        • P(i);
  • Actual
    • S(D);
    • Vars
      • K(g);N_GUARD,S_FLIGHT::B(C)
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