MESON Chess Problem Database

Problem Display
PID: 133270 (Q7/1N6/pR1N1n2/pp1k4/3pRP1b/1P2r1P1/4Pn2/5K2 w - - 0 1)

Driver, John Edward

The Field, 1960

(First published on Thu Sep 22 1960)

Q7/1N6/pR1N1n2/pp1k4/3pRP1b/1P2r1P1/4Pn2/5K2

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb3
      • 2.Re5#
    • 1...Rc3
      • 2.Re5#
    • 1...Rd3
      • 2.Re5#
    • 1...Rf3
      • 2.Re5#
    • 1...Rxg3
      • 2.Re5#
    • 1...Sxe4
      • 2.Qg8#
    • 1...Sg4
      • 2.Qg8#
    • 1...Sh5
      • 2.Qg8#
    • 1...Sd7
      • 2.Qg8#
    • 1...Sh7
      • 2.Qg8#
    • 1...Sg8
      • 2.Qxg8#
  • Tries
    • 1.Sxb5?
      • threat
        • 2.Rxd4#
      • 1...Kxe4
        • 2.S7d6#
      • 1...Rxe4
        • 2.Sc7#
        • 2.Rd6#
      • 1...S2xe4
        • 2.Sc7#
      • 1...S6xe4
        • 2.Sc7#
        • 2.Qg8#
      • 1...Rd3
        • 2.Re5#
      • 1...d3
        • 2.Sc3#
        • 2.Rd4#
      • 1...axb5!
    • 1.Rxb5+?
      • 1...Kc6
        • 2.Qc8#
      • 1...axb5!
    • 1.Qc8?
      • threat
        • 2.Qf5#
        • 2.Qe6#
        • 2.Qc5#
        • 2.Qc6#
      • 1...S2xe4
        • 2.Qf5#
      • 1...S6xe4
        • 2.Qf5#
        • 2.Qg8#
      • 1...Rc3
        • 2.Re5#
        • 2.Qf5#
        • 2.Qe6#
      • 1...Sd3
        • 2.Qe6#
        • 2.Qc6#
      • 1...S2g4
        • 2.Qe6#
        • 2.Qc5#
        • 2.Qc6#
      • 1...S6g4
        • 2.Qe6#
        • 2.Qc5#
        • 2.Qc6#
        • 2.Qg8#
      • 1...Sd7
        • 2.Qc6#
        • 2.Qg8#
      • 1...Rxe4!
    • 1.b4?
      • threat
        • 2.Sxa5#
        • 2.Sc5#
        • 2.Sd8#
      • 1...Rxe4
        • 2.Sc5#
        • 2.Sd8#
      • 1...S2xe4
        • 2.Sc5#
        • 2.Sd8#
      • 1...S6xe4
        • 2.Sc5#
        • 2.Sd8#
        • 2.Qg8#
      • 1...Rc3
        • 2.Sc5#
        • 2.Re5#
      • 1...a4
        • 2.Sa5#
        • 2.Sc5#
        • 2.Sd8#
      • 1...axb4!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Rxd4#
      • 1...Kxe4
        • 2.Sbd6#
      • 1...Rxe4
        • 2.Rd6#
      • 1...S2xe4
        • 2.Se7#
      • 1...S6xe4
        • 2.Qg8#
      • 1...Rd3
        • 2.Re5#
      • 1...d3
        • 2.Rd4#

This is a version of 58149

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 9
  • Sets
    • R(b);N_GUARD,XP(C)::R1(E)
    • R(b);N_GUARD::R1(E)
    • R(b);N_GUARD,XP(D)::R1(E)
    • S(i);N_GUARD,XR(E)::QAB(J)
    • S(i);N_GUARD::QAB(J)
    • S(i);N_GUARD::QAB(J),XS(i)
  • Tries
    • Try
      • S(H);XP(f)
      • Threat
        • R1(E),XP(c)
      • Vars
        • K(g);S_FLIGHT,XR(E)::QAB(J)+S(I),DCHECK
        • S(a);SBLOCK,XR(E)::S(H)
        • R(b);N_GUARD::R1(E)
      • Refutation
        • P(h);XS(H)
    • Try
      • R(G);CHECK,XP(f)
      • Vars
        • K(g);S_FLIGHT::QAR2(J)
      • Refutation
        • P(h);XR(G)
    • Try
      • Q(J);
      • Threat
        • DUALS(4)
      • Vars
        • S(a);XR(E)::QAR2(J)
      • Refutation
        • R(b);XR(E)
    • Try
      • P(C);
      • Threat
        • DUALS(3)
      • Refutation
        • P(e);XP(C)
  • Actual
    • S(H);
    • Threat
      • R1(E),XP(c)
    • Vars
      • K(g);S_FLIGHT,XR(E)::QAB(J)+S(I),DCHECK
      • R(b);SBLOCK,XR(E)::R1(G)
      • S(a);SBLOCK,XR(E)::S(H)
      • S(i);N_GUARD,SBLOCK,XR(E)::QAB(J)
      • R(b);N_GUARD::R1(E)
      • P(c);::R1(E)
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