MESON Chess Problem Database

Problem Display
PID: 240298 (7B/1N2p3/6B1/3kp1K1/8/1PQn4/1n3P2/8 w - - 0 1)

Lincoln, Robert A

Problem-Forum, 2014

7B/1N2p3/6B1/3kp1K1/8/1PQn4/1n3P2/8

#2

7 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Qc6#
    • 1...Sd1
      • 2.Qc4#
    • 1...Sa4
      • 2.Qc4#
    • 1...Sc4
      • 2.Qxc4#
  • Tries
    • 1.Qc5+?
      • 1...Ke6
        • 2.Qc6#
      • 1...Sxc5!
  • Keys
    • 1.Be8!
      • 1...Ke4
        • 2.Bc6#
      • 1...Ke6
        • 2.Qc6#
      • 1...Sxf2
        • 2.Qxe5#
      • 1...e4
        • 2.Qc6#
      • 1...Sd1
        • 2.Qc4#
      • 1...Sa4
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sc1
        • 2.Qxe5#
      • 1...Se1
        • 2.Qxe5#
      • 1...Sb4
        • 2.Qxe5#
      • 1...Sf4
        • 2.Qxe5#
      • 1...Sc5
        • 2.Qxe5#
      • 1...e6
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAR2(C)
    • S(a);N_GUARD::QAB1(C)
    • S(a);N_GUARD::QAB1(C),XS(a)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR2(C)
      • Refutation
        • S(b);XQ(C)
  • Actual
    • B(E);
    • Vars
      • K(c);S_FLIGHT::B(E)
      • K(c);S_FLIGHT::QAR2(C)
      • S(b);N_GUARD,XP(A)::QAR1(C),XP(d)
      • P(d);SBLOCK::QAB1(C)
      • S(a);N_GUARD::QAB1(C)
      • S(a);N_GUARD::QAB1(C),XS(a)
      • S(b);N_GUARD::QAR1(C),XP(d)
      • P(e);SBLOCK::B(E)
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