MESON Chess Problem Database

Problem Display
PID: 142201 (qnb3K1/1R1Pp3/1PN1N3/1k1P2b1/R3Q3/pr2p3/Pn6/1r6 w - - 0 1)

Lane, Henry Fitzgerald William

Manchester Weekly Times, 1901-1903

qnb3K1/1R1Pp3/1PN1N3/1k1P2b1/R3Q3/pr2p3/Pn6/1r6

#2

10 + 11

14867 BCPS Library 20111

SOLUTION

  • SOUND
  • Sets
    • 1...Qa5
      • 2.Rxa5#
    • 1...Qa7
      • 2.Sxa7#
    • 1...Rc3
      • 2.Qb4#
    • 1...Rd3
      • 2.Qb4#
    • 1...Rb4
      • 2.Qxb4#
    • 1...Sd1
      • 2.Qc4#
    • 1...Sd3
      • 2.Qc4#
    • 1...Sc4
      • 2.Qxc4#
    • 1...Sa6
      • 2.Ra5#
  • Tries
    • 1.Sed4+?
      • 1...Kxa4
        • 2.axb3#
      • 1...Kc5!
    • 1.Rb4+?
      • 1...Ka6
        • 2.Sc5#
      • 1...Rxb4!
    • 1.Qd4?
      • threat
        • 2.Sc7#
      • 1...Qxb7
        • 2.Ra5#
      • 1...Rb4
        • 2.Qxb4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sa6
        • 2.Ra5#
      • 1...Bf4!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qxb3#
      • 1...Kxa4
        • 2.Qxb3#
      • 1...Qxa4
        • 2.Sc7#
      • 1...Sxa4
        • 2.Sc7#
      • 1...Sxc6
        • 2.Qxc6#
      • 1...Qa5
        • 2.Rxa5#
      • 1...Rc3
        • 2.Scd4#
      • 1...Rd3
        • 2.Sc7#
      • 1...Rb4
        • 2.Sc7#
      • 1...Sd1
        • 2.Qc4#
      • 1...Sd3
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sa6
        • 2.Ra5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • Q(i);N_GUARD::R1(B),XQ(i)
    • Q(i);N_GUARD::S(F),XQ(i)
    • R(d);N_GUARD::QAR1(C)
    • R(d);N_GUARD::QAR1(C),XR(d)
    • S(b);N_GUARD::QAB1(C)
    • S(b);N_GUARD::QAB1(C),XS(b)
    • S(j);S_CUTQ(i)::R1(B)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(f);S_FLIGHT,XR(B)::P(A),XR(d)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • K(f);S_FLIGHT::S(G)
      • Refutation
        • R(d);XR(B)
    • Try
      • Q(C);
      • Threat
        • S(G)
      • Vars
        • Q(i);N_GUARD,XR(H)::R1(B)
        • R(d);N_GUARD::QAR1(C),XR(d)
        • S(b);N_GUARD::QAB1(C),XS(b)
        • S(j);S_CUTQ(i)::R1(B)
      • Refutation
        • B(g);
  • Actual
    • Q(C);
    • Threat
      • QAR2(C),XR(d)
    • Vars
      • K(f);P_SPINR(d),S_FLIGHT,XR(B)::QAB1(C),XR(d)
      • Q(i);SBLOCK,XR(B)::S(G)
      • S(b);SBLOCK,XR(B)::S(G)
      • S(j);OGATE,XS(F)::QAB1(C),XS(j)
      • Q(i);N_GUARD::R1(B),XQ(i)
      • R(d);::S(F)
      • R(d);::S(G)
      • S(b);N_GUARD::QAB1(C)
      • S(b);N_GUARD::QAB1(C),XS(b)
      • S(j);S_CUTQ(i)::R1(B)
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