MESON Chess Problem Database

Problem Display
PID: 79646 (1rn5/5Q2/2p3pb/2p1P3/3NkP2/5NpP/n1PP4/3B2K1 w - - 0 1)

Wielgos, Oskar

Die Schwalbe, 1962

1rn5/5Q2/2p3pb/2p1P3/3NkP2/5NpP/n1PP4/3B2K1

#2

10 + 9

5503 ISC 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Se2?
      • threat
        • 2.Sxg3#
      • 1...Kxf3
        • 2.Sc3#
      • 1...g2
        • 2.Sg3#
      • 1...Bxf4!
    • 1.Se6?
      • threat
        • 2.Sxc5#
      • 1...Kd5
        • 2.Seg5#
      • 1...Bf8
        • 2.Seg5#
      • 1...c4
        • 2.Sc5#
      • 1...Rb5!
    • 1.Qxg6+?
      • 1...Kxf4
        • 2.Se6#
        • 2.Qf5#
        • 2.Qg4#
      • 1...Kd5!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sxg3#
      • 1...Kxf4
        • 2.Sd6#
      • 1...Bxf4
        • 2.d3#
      • 1...gxf5
        • 2.Qc4#
      • 1...g2
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Threat
        • S(G),XP(b)
      • Vars
        • K(c);S_FLIGHT,XS(E)::B(A)+S(G)
        • P(b);::S(G)
      • Refutation
        • B(g);XP(H)
    • Try
      • S(G);
      • Threat
        • S(G),XP(d)
      • Vars
        • K(c);S_FLIGHT::QAB(J)+S(G)
        • B(g);N_GUARD::S(G)
        • P(d);::S(G)
      • Refutation
        • R(h);
    • Try
      • Q(J);CHECK,XP(f)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(G);
    • Threat
      • S(G),XP(b)
    • Vars
      • K(c);P-FLIGHT,XP(H)::QAR(J)+S(G)
      • B(g);SBLOCK,XP(H)::P(D)
      • P(f);SBLOCK,XS(G)::QAR2(J)
      • P(b);::S(G)
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