MESON Chess Problem Database

Problem Display
PID: 44029 (8/3N4/1p3P2/1BPkPK2/3p4/nP6/1Q2P3/2n5 w - - 0 1)

Hanshew, John K

Maryland Chess Review, 1874

8/3N4/1p3P2/1BPkPK2/3p4/nP6/1Q2P3/2n5

#2

9 + 5

4803 Chess Problems by John K Hanshew 1874

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.bxc4#
    • 1...d3
      • 2.e4#
    • 1...bxc5
      • 2.Sb6#
  • Tries
    • 1.Qxc1?
      • threat
        • 2.Sxb6#
        • 2.Qh1#
      • 1...Sxb5
        • 2.Qh1#
      • 1...bxc5
        • 2.Sb6#
        • 2.Qh1#
        • 2.Qxc5#
      • 1...Sc2
        • 2.Qh1#
      • 1...Sc4
        • 2.Qh1#
        • 2.Qxc4#
        • 2.bxc4#
      • 1...d3!
    • 1.Qxa3?
      • threat
        • 2.Sxb6#
        • 2.Qa8#
      • 1...bxc5
        • 2.Sb6#
        • 2.Qxc5#
        • 2.Qa8#
      • 1...d3!
    • 1.Qc3?
      • threat
        • 2.Sxb6#
        • 2.Qf3#
      • 1...Sxb5
        • 2.Qf3#
      • 1...bxc5
        • 2.Sb6#
        • 2.Qf3#
        • 2.Qxc5#
      • 1...Sd3
        • 2.Sxb6#
      • 1...Sc4
        • 2.Qf3#
        • 2.Qxc4#
        • 2.bxc4#
      • 1...d3
        • 2.Sxb6#
        • 2.e4#
      • 1...dxc3!
    • 1.e3?
      • threat
        • 2.Qxd4#
        • 2.Qg2#
        • 2.e4#
      • 1...Sxb3
        • 2.Qg2#
        • 2.e4#
      • 1...Sxb5
        • 2.Qg2#
      • 1...bxc5
        • 2.Sb6#
        • 2.Qg2#
        • 2.e4#
      • 1...Se2
        • 2.e4#
      • 1...Sc2
        • 2.e4#
      • 1...d3
        • 2.Qd4#
        • 2.Qg2#
        • 2.e4#
      • 1...dxe3!
  • Keys
    • 1.Qa1!
      • 1...Sxe2
        • 2.Qh1#
      • 1...Sxb3
        • 2.Qh1#
      • 1...Sxb5
        • 2.Qa8#
      • 1...bxc5
        • 2.Sb6#
      • 1...Sa2
        • 2.Qh1#
      • 1...Sd3
        • 2.Qh1#
      • 1...Sb1
        • 2.Qa8#
      • 1...Sc2
        • 2.Qa8#
      • 1...Sc4
        • 2.Qa8#
        • 2.bxc4#
      • 1...d3
        • 2.e4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • S(b);OGATE::P(C),XS(b)
    • P(c);N_GUARD::P(B)
    • P(e);SBLOCK,XP(E)::S(I)
  • Tries
    • Try
      • Q(A);XS(a)
      • Threat
        • DUALS(2)
      • Vars
        • S(b);XB(D)::QAB(A)
        • S(b);::QAB(A)
      • Refutation
        • P(c);
    • Try
      • Q(A);XS(b)
      • Threat
        • DUALS(2)
      • Refutation
        • P(c);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);XB(D)::QAB(A)
        • S(a);::S(I),XP(e)
      • Refutation
        • P(c);XQ(A)
    • Try
      • P(B);
      • Threat
        • DUALS(3)
      • Vars
        • S(b);XB(D)::QAB(A)
        • S(a);::P(B)
        • S(b);::P(B)
      • Refutation
        • P(c);XP(B)
  • Actual
    • Q(A);
    • Vars
      • S(a);OGATE,XP(B)::QAB(A)
      • S(a);OGATE,XP(C)::QAB(A)
      • S(b);OGATE,XB(D)::QAB(A)
      • P(e);SBLOCK,XP(E)::S(I)
      • S(a);OGATE::QAB(A)
      • S(b);OGATE::QAB(A)
      • P(c);N_GUARD::P(B)
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