MESON Chess Problem Database

Problem Display
PID: 69405 (7k/5K2/6B1/8/3p4/2p5/n7/Q1n5 w - - 0 1)

Markx, BJM

Tijdschrift vd NSB, 1897

7k/5K2/6B1/8/3p4/2p5/n7/Q1n5

#2

3 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Se2
      • 2.Qh1#
    • 1...Sb3
      • 2.Qh1#
    • 1...Sd3
      • 2.Qh1#
    • 1...Sb4
      • 2.Qa8#
    • 1...c2
      • 2.Qxd4#
  • Tries
    • 1.Bc2?
      • 1...Sd3
        • 2.Qh1#
      • 1...Se2
        • 2.Qh1#
      • 1...Sb3
        • 2.Qh1#
      • 1...Sb4
        • 2.Qa8#
      • 1...d3!
    • 1.Be4?
      • 1...Se2
        • 2.Qh1#
      • 1...Sb3
        • 2.Qh1#
      • 1...Sd3
        • 2.Qh1#
      • 1...Sb4
        • 2.Qa8#
      • 1...c2
        • 2.Qxd4#
      • 1...d3!
    • 1.Bf5?
      • 1...Se2
        • 2.Qh1#
      • 1...Sb3
        • 2.Qh1#
      • 1...Sd3
        • 2.Qh1#
      • 1...Sb4
        • 2.Qa8#
      • 1...c2
        • 2.Qxd4#
      • 1...d3!
    • 1.Qb2?
      • threat
        • 2.Qh2#
        • 2.Qb8#
      • 1...Se2
        • 2.Qb8#
      • 1...Sb3
        • 2.Qh2#
      • 1...Sb4
        • 2.Qh2#
      • 1...c2
        • 2.Qxd4#
        • 2.Qb8#
      • 1...cxb2!
    • 1.Qb1?
      • threat
        • 2.Qb8#
      • 1...Sb3
        • 2.Qh1#
      • 1...Sb4!
    • 1.Qxa2?
      • threat
        • 2.Qh2#
        • 2.Qa8#
      • 1...Se2
        • 2.Qa8#
      • 1...c2
        • 2.Qa8#
      • 1...Sxa2!
  • Keys
    • 1.Bd3!
      • 1...Sxd3
        • 2.Qh1#
      • 1...Se2
        • 2.Qh1#
      • 1...Sb3
        • 2.Qh1#
      • 1...Sb4
        • 2.Qa8#
      • 1...c2
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE::QAB(A)
    • S(b);OGATE::QAB1(A)
    • P(c);OGATE,P_SPINP(d)::QAB(A),XP(d)
  • Tries
    • Try
      • B(B);
      • Vars
        • S(a);OGATE::QAB(A)
        • S(b);OGATE::QAB1(A)
      • Refutation
        • P(d);P_SPINP(c)
    • Try
      • B(B);
      • Vars
        • S(a);OGATE::QAB(A)
        • S(b);OGATE::QAB1(A)
        • P(c);OGATE,P_SPINP(d)::QAB(A),XP(d)
      • Refutation
        • P(d);P_SPINP(c)
    • Try
      • B(B);
      • Vars
        • S(a);OGATE::QAB(A)
        • S(b);OGATE::QAB1(A)
        • P(c);OGATE,P_SPINP(d)::QAB(A),XP(d)
      • Refutation
        • P(d);P_SPINP(c)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAR(A)
        • S(b);::QAR(A)
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • S(a);OGATE::QAB(A)
      • Refutation
        • S(b);
    • Try
      • Q(A);XS(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAB1(A)
        • P(c);::QAB1(A)
      • Refutation
        • S(a);XQ(A)
  • Actual
    • B(B);
    • Vars
      • S(a);OGATE,XB(B)::QAB(A)
      • S(a);OGATE::QAB(A)
      • S(b);OGATE::QAB1(A)
      • P(c);OGATE,P_SPINP(d)::QAB(A),XP(d)
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