MESON Chess Problem Database

Problem Display
PID: 142224 (8/8/4B2K/rp1Q4/3R1N2/1nk2p2/1pp3b1/1qrnb3 w - - 0 1)

Lane, Henry Fitzgerald William

Source?, 0000

8/8/4B2K/rp1Q4/3R1N2/1nk2p2/1pp3b1/1qrnb3

#2

5 + 12

14867 BCPS Library 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Sa1
      • 2.Qc5#
    • 1...Sc5
      • 2.Qxc5#
    • 1...f2
      • 2.Se2#
    • 1...b4
      • 2.Rd3#
      • 2.Rc4#
      • 2.Qc4#
  • Tries
    • 1.Qe4?
      • threat
        • 2.Sd5#
        • 2.Rd3#
        • 2.Qd3#
      • 1...Sxd4
        • 2.Qxe1#
      • 1...Bd2
        • 2.Rd3#
        • 2.Qd3#
      • 1...Bf1
        • 2.Sd5#
      • 1...Sf2
        • 2.Sd5#
      • 1...Se3
        • 2.Rd3#
        • 2.Qd3#
        • 2.Qxe3#
      • 1...Sa1
        • 2.Rd3#
        • 2.Qd3#
      • 1...Sd2
        • 2.Rd3#
        • 2.Qd3#
      • 1...b4
        • 2.Rd3#
        • 2.Qd3#
      • 1...Sc5!
    • 1.Qc6+?
      • 1...Sc5
        • 2.Qxc5#
      • 1...Kxd4!
    • 1.Qd6?
      • threat
        • 2.Rd3#
        • 2.Qb4#
      • 1...Ra4
        • 2.Rd3#
      • 1...Bf1
        • 2.Qb4#
      • 1...Sf2
        • 2.Qb4#
      • 1...Sc5
        • 2.Qxc5#
      • 1...b4
        • 2.Rd3#
        • 2.Rc4#
        • 2.Qxb4#
      • 1...Sxd4!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Sd5#
      • 1...Sxd4
        • 2.Qxe1#
      • 1...Bd2
        • 2.Rc4#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sa1
        • 2.Qc5#
      • 1...Sd2
        • 2.Ra4#
        • 2.Re4#
      • 1...Sc5
        • 2.Qxc5#
      • 1...f2
        • 2.Se2#
      • 1...b4
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(h);N_GUARD::QAR2(C)
    • S(h);N_GUARD::QAR2(C),XS(h)
    • P(j);N_GUARD::S(B)
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • S(h);N_GUARD,SBLOCK,XR(A)::QAB(C),XB(d)
        • B(g);::S(B)
        • S(c);::S(B)
      • Refutation
        • S(h);
    • Try
      • Q(C);CHECK
      • Vars
        • S(h);N_GUARD,P_SPINS(h)::QAR2(C),XS(h)
      • Refutation
        • K(i);S_FLIGHT,XR(A)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • R(k);::R1(A)
        • B(g);::QAB1(C)
        • S(c);::QAB1(C)
        • S(h);N_GUARD::QAR2(C),XS(h)
      • Refutation
        • S(h);XR(A)
  • Actual
    • Q(C);
    • Threat
      • S(B)
    • Vars
      • S(h);N_GUARD,P_SPINS(h),SBLOCK,XR(A)::QAB(C),XB(d)
      • B(d);P_PINS(B),SBLOCK::QAB(C)+R(A),DCHECK
      • S(c);N_GUARD::QAR2(C),XS(c)
      • S(h);N_GUARD::QAR2(C)
      • S(h);N_GUARD::QAR2(C),XS(h)
      • P(j);N_GUARD::S(B)
      • P(l);SBLOCK::QAB(C)+R(A),DCHECK
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