MESON Chess Problem Database

Problem Display
PID: 149754 (B7/2r1RQ2/n1P4r/4N3/K2Pk1P1/2PN1p2/5P2/7b w - - 0 1)

Leites, Samuil Davidovich

Tijdschrift vd NSB, 1930

B7/2r1RQ2/n1P4r/4N3/K2Pk1P1/2PN1p2/5P2/7b

#2

11 + 6

35 L'Italia Scacchistica 1930

SOLUTION

  • SOUND
  • Sets
    • 1...Sb4
      • 2.Sc5#
    • 1...Sc5+
      • 2.Sxc5#
    • 1...Sb8
      • 2.Sc5#
  • Tries
    • 1.Sxf3+?
      • 1...Re6
        • 2.Qf5#
      • 1...Rxe7
        • 2.Qf5#
      • 1...Kxd3!
    • 1.Sc4+?
      • 1...Re6
        • 2.Qf5#
      • 1...Rxe7
        • 2.Qf5#
      • 1...Kxd3!
    • 1.Sg6+?
      • 1...Rxe7
        • 2.Qf5#
      • 1...Kxd3!
    • 1.Sd7+?
      • 1...Re6
        • 2.Qf5#
      • 1...Kxd3!
    • 1.Qg6+?
      • 1...Kd5
        • 2.Sf4#
      • 1...Rxg6!
  • Keys
    • 1.Qc4!
      • threat
        • 2.d5#
      • 1...Sc5+
        • 2.dxc5#
      • 1...Rhxc6
        • 2.Sd7#
      • 1...Rcxc6
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(d);N_GUARD::S(C)
    • S(d);CHECK,N_GUARD::S(C),XS(d)
  • Tries
    • Try
      • S(G);CHECK,XP(b)
      • Vars
        • R(e);P_SPINR(e)::QAB1(J)
        • R(f);XR(I)::QAB1(J)
      • Refutation
        • K(c);S_FLIGHT,XS(C)
    • Try
      • S(G);CHECK
      • Vars
        • R(e);P_SPINR(e)::QAB1(J)
        • R(f);XR(I)::QAB1(J)
      • Refutation
        • K(c);S_FLIGHT,XS(C)
    • Try
      • S(G);CHECK
      • Vars
        • R(f);XR(I)::QAB1(J)
      • Refutation
        • K(c);S_FLIGHT,XS(C)
    • Try
      • S(G);CHECK
      • Vars
        • R(e);P_SPINR(e)::QAB1(J)
      • Refutation
        • K(c);S_FLIGHT,XS(C)
    • Try
      • Q(J);CHECK
      • Vars
        • K(c);S_FLIGHT::S(C)
      • Refutation
        • R(e);XQ(J)
  • Actual
    • Q(J);
    • Threat
      • QAR(J)+P(E)
    • Vars
      • S(d);CHECK,OGATE::QAR(J)+P(E),XS(d)
      • R(e);N_GUARD,P_SPINR(e),XP(H)::R(I)+S(G)
      • R(f);N_GUARD,P_SPINR(f),XP(H)::R(I)+S(G)
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