MESON Chess Problem Database

Problem Display
PID: 9994 (7q/3Rpp1p/1R5p/1r2k2K/r3PN2/7P/2B3Pb/2N2Q2 w - - 0 1)

Lender, Baruch

2nd Comm., Israel Ring Ty., 1961/I

7q/3Rpp1p/1R5p/1r2k2K/r3PN2/7P/2B3Pb/2N2Q2

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qf6
      • 2.Rxb5#
    • 1...Rd4
      • 2.Rxe7#
    • 1...Rxe4
      • 2.Sfd3#
    • 1...Rb1
      • 2.Rd5#
    • 1...Rb2
      • 2.Rd5#
    • 1...Rb3
      • 2.Rd5#
    • 1...Rb4
      • 2.Rd5#
    • 1...Rd5
      • 2.Rxd5#
    • 1...Bxf4
      • 2.Qxb5#
    • 1...f5
      • 2.Re6#
    • 1...f6
      • 2.Rxb5#
      • 2.Re6#
  • Tries
    • 1.Sfe2?
      • threat
        • 2.Rxe7#
        • 2.Qf5#
      • 1...Rxe4
        • 2.Sd3#
      • 1...Rxb6
        • 2.Qf5#
      • 1...Qc8
        • 2.Qf5#
      • 1...Qd8
        • 2.Qf5#
      • 1...Qe8
        • 2.Qf5#
      • 1...Qf8
        • 2.Qf5#
      • 1...Ra7
        • 2.Qf5#
      • 1...Bf4
        • 2.Rxe7#
        • 2.Qxf4#
      • 1...e6
        • 2.Rxb5#
      • 1...f5
        • 2.Rxe7#
        • 2.Qxf5#
      • 1...Qf6!
  • Keys
    • 1.Se6!
      • threat
        • 2.Qf5#
      • 1...Rxe4
        • 2.Sd3#
      • 1...fxe6
        • 2.Rxb5#
      • 1...Bf4
        • 2.Qxf4#
      • 1...f5
        • 2.Qxf5#
      • 1...Qf6
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • Q(i);SBLOCK::R(I),XR(c)
    • R(b);SBLOCK::R(J),XP(f)
    • R(b);SBLOCK,XP(F)::S(G)
    • R(c);N_GUARD::R1(J)
    • R(c);N_GUARD::R1(J),XR(c)
    • B(a);SBLOCK,XS(G)::QAR(B),XR(c)
    • P(g);N_GUARD::R1(I)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);SBLOCK,XP(F)::S(A)
        • R(c);XR(I)::QAR1(B)
        • Q(i);::QAR1(B)
        • R(b);::QAR1(B)
        • P(f);SBLOCK::R(I),XR(c)
      • Refutation
        • Q(i);
  • Actual
    • S(G);
    • Threat
      • QAR1(B)
    • Vars
      • R(b);SBLOCK,XP(F)::S(A)
      • P(g);SBLOCK,XS(G)::R(I),XR(c)
      • B(a);N_GUARD::QAB1(B),XB(a)
      • P(g);::QAR1(B),XP(g)
      • Q(i);SBLOCK::QAR(B),XR(c)
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