MESON Chess Problem Database

Problem Display
PID: 154608 (B2n2K1/1rp3p1/5Rp1/2N1k3/1p2P3/B1p4N/5Q2/8 w - - 0 1)

Dobbs, Gilbert S

British Chess Magazine, 1903

B2n2K1/1rp3p1/5Rp1/2N1k3/1p2P3/B1p4N/5Q2/8

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rb5
      • 2.Sd3#
      • 2.Sd7#
    • 1...Rb6
      • 2.Sd3#
      • 2.Sd7#
    • 1...Ra7
      • 2.Sd3#
      • 2.Sd7#
    • 1...Rb8
      • 2.Sd3#
      • 2.Sd7#
    • 1...Sc6
      • 2.Re6#
    • 1...Se6
      • 2.Rxe6#
    • 1...Sf7
      • 2.Re6#
    • 1...c2
      • 2.Bb2#
  • Tries
    • 1.Sg5?
      • threat
        • 2.Sd3#
        • 2.Sd7#
      • 1...Se6
        • 2.Sf7#
        • 2.Rxe6#
      • 1...c6
        • 2.Sd3#
      • 1...gxf6!
    • 1.Bxb4?
      • threat
        • 2.Bxc3#
      • 1...Rxb4
        • 2.Sd3#
        • 2.Sd7#
      • 1...Se6
        • 2.Rxe6#
      • 1...Sc6
        • 2.Re6#
      • 1...c2
        • 2.Bc3#
      • 1...gxf6!
    • 1.Qg3+?
      • 1...Kxf6
        • 2.Qg5#
      • 1...Kd4!
  • Keys
    • 1.Qd2!
      • 1...Kxf6
        • 2.Qg5#
      • 1...cxd2
        • 2.Bb2#
      • 1...bxa3
        • 2.Qxc3#
      • 1...gxf6
        • 2.Qd5#
      • 1...b3
        • 2.Qxc3#
      • 1...Rb5
        • 2.Sd7#
      • 1...Rb6
        • 2.Sd7#
      • 1...Ra7
        • 2.Sd7#
      • 1...Rb8
        • 2.Sd7#
      • 1...Sc6
        • 2.Re6#
      • 1...Se6
        • 2.Rxe6#
      • 1...Sf7
        • 2.Re6#
      • 1...c2
        • 2.Bb2#
      • 1...g5
        • 2.Rf5#
      • 1...c6
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • S(h);N_GUARD::R1(F)
    • S(h);N_GUARD::R1(F),XS(h)
    • P(a);OGATEB::B(B)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(f);::S(E)
      • Refutation
        • P(g);XR(F)
    • Try
      • B(B);XP(b)
      • Threat
        • B(B),XP(a)
      • Vars
        • S(h);N_GUARD::R1(F),XS(h)
        • S(h);N_GUARD::R1(F)
        • P(a);::B(B)
      • Refutation
        • P(g);XR(F)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT,XR(F)::QAB1(A)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(c);S_FLIGHT,XR(F)::QAB1(A)
      • P(a);OGATEB,XQ(A)::B(B)
      • P(b);N_GUARD,XB(B)::QAB(A),XP(a)
      • P(g);SBLOCK,XR(F)::QAR1(A)
      • P(b);N_GUARD::QAB(A),XP(a)
      • R(e);::S(E)
      • S(h);N_GUARD::R1(F)
      • S(h);N_GUARD::R1(F),XS(h)
      • P(a);OGATEB::B(B)
      • P(d);N_GUARD::R1(F)
      • P(f);N_GUARD::QAB1(A)
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