MESON Chess Problem Database

Problem Display
PID: 159972 (K2N4/3R1p2/2n5/B3nB1R/2N2k1p/5pp1/P1p2P2/2qb2Q1 w - - 0 1)

Dobbs, Gilbert S

British Chess Magazine, 1907

K2N4/3R1p2/2n5/B3nB1R/2N2k1p/5pp1/P1p2P2/2qb2Q1

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.Bd2#
    • 1...Qd2
      • 2.Bxd2#
    • 1...Qe3
      • 2.fxe3#
    • 1...Qa1
      • 2.Bd2#
    • 1...Qb1
      • 2.Bd2#
    • 1...Be2
      • 2.Qxc1#
    • 1...Sb4
      • 2.Rd4#
    • 1...Sd4
      • 2.Rxd4#
    • 1...Sxa5
      • 2.Rd4#
    • 1...Sa7
      • 2.Rd4#
    • 1...Se7
      • 2.Rd4#
    • 1...Sb8
      • 2.Rd4#
    • 1...Sxd8
      • 2.Rd4#
    • 1...gxf2
      • 2.Qh2#
      • 2.Qg5#
    • 1...g2
      • 2.Qh2#
    • 1...h3
      • 2.Qxg3#
      • 2.fxg3#
    • 1...f6
      • 2.Se6#
  • Tries
    • 1.Qe1?
      • threat
        • 2.Qe4#
      • 1...Qe3
        • 2.Qxe3#
        • 2.fxe3#
      • 1...Be2
        • 2.Qxc1#
      • 1...gxf2!
  • Keys
    • 1.Sb2!
      • 1...Qxb2
        • 2.Bd2#
      • 1...Sxd7
        • 2.Sd3#
      • 1...Sxa5
        • 2.Rd4#
      • 1...Sxd8
        • 2.Rd4#
      • 1...gxf2
        • 2.Qg5#
      • 1...Sd3
        • 2.Sxd3#
      • 1...Sc4
        • 2.Sd3#
      • 1...Sg4
        • 2.Sd3#
      • 1...Sg6
        • 2.Sd3#
      • 1...Qd2
        • 2.Bxd2#
      • 1...Qe3
        • 2.fxe3#
      • 1...Qa1
        • 2.Bd2#
      • 1...Qb1
        • 2.Bd2#
      • 1...Be2
        • 2.Qxc1#
      • 1...Sb4
        • 2.Rd4#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sa7
        • 2.Rd4#
      • 1...Se7
        • 2.Rd4#
      • 1...Sb8
        • 2.Rd4#
      • 1...g2
        • 2.Qh2#
      • 1...h3
        • 2.Qxg3#
        • 2.fxg3#
      • 1...f6
        • 2.Se6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • Q(a);N_GUARD::B(E)
    • Q(a);N_GUARD::B(E),XQ(a)
    • Q(a);OGATE::P(C),XQ(a)
    • B(b);OGATE::QAB(A),XQ(a)
    • S(i);N_GUARD::R(H)
    • S(i);N_GUARD::R(H),XS(i)
    • S(i);N_GUARD,XB(E)::R(H)
    • S(i);N_GUARD,XS(J)::R(H)
    • P(e);OGATEB::QAB(A)
    • P(j);N_GUARD::S(J)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • B(b);OGATE::QAB(A),XQ(a)
      • Refutation
        • P(e);XP(C)
  • Actual
    • S(D);
    • Vars
      • Q(a);N_GUARD,XS(D)::B(E)
      • S(h);N_GUARD,XR(H)::S(D)
      • S(i);N_GUARD,XB(E)::R(H)
      • S(i);N_GUARD,XS(J)::R(H)
      • P(e);OGATE,XP(C)::QAB1(A)
      • S(h);N_GUARD::S(D),XS(h)
      • S(h);N_GUARD::S(D)
      • Q(a);N_GUARD::B(E),XQ(a)
      • Q(a);OGATE::P(C),XQ(a)
      • Q(a);N_GUARD::B(E)
      • B(b);OGATE::QAB(A),XQ(a)
      • S(i);N_GUARD::R(H)
      • S(i);N_GUARD::R(H),XS(i)
      • P(e);OGATEB::QAB(A)
      • P(j);N_GUARD::S(J)
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