MESON Chess Problem Database

Problem Display
PID: 16819 (8/B3Q2K/8/8/8/4P3/3NkN2/3RqR2 w - - 0 1)

Buglos, Janos

1/2 Prize, Raketa, 1943-1944

8/B3Q2K/8/8/8/4P3/3NkN2/3RqR2

#2

8 + 2

5454 Near Snap 2013

SOLUTION

  • SOUND
  • Tries
    • 1.Qd7?
      • threat
        • 2.Rdxe1#
        • 2.Qg4#
        • 2.Qb5#
        • 2.Qd3#
      • 1...Qxd2
        • 2.Qg4#
      • 1...Qxf2
        • 2.Qb5#
      • 1...Qxd1
        • 2.Qd3#
      • 1...Qxf1!
    • 1.Qf7?
      • threat
        • 2.Rfxe1#
        • 2.Qc4#
        • 2.Qh5#
        • 2.Qf3#
      • 1...Qxd2
        • 2.Qh5#
      • 1...Qxf2
        • 2.Qc4#
      • 1...Qxf1
        • 2.Qf3#
      • 1...Qxd1!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Qd3#
        • 2.Qf3#
        • 2.Qc4#
        • 2.Qg4#
      • 1...Qxd2
        • 2.Qg4#
      • 1...Qxf2
        • 2.Qc4#
      • 1...Qxd1
        • 2.Qd3#
      • 1...Qxf1
        • 2.Qf3#

This anticipates 124417(1951)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);
      • Threat
        • DUALS(4)
      • Vars
        • Q(a);XS(C)::QAB(G)
        • Q(a);XS(D)::QAB(G)
        • Q(a);XR(A)::QAB1(G)
      • Refutation
        • Q(a);XR(B)
    • Try
      • Q(G);
      • Threat
        • DUALS(4)
      • Vars
        • Q(a);XS(C)::QAB(G)
        • Q(a);XS(D)::QAB(G)
        • Q(a);XR(B)::QAB1(G)
      • Refutation
        • Q(a);XR(A)
  • Actual
    • Q(G);
    • Threat
      • DUALS(4)
    • Vars
      • Q(a);XS(C)::QAB(G)
      • Q(a);XS(D)::QAB(G)
      • Q(a);XR(A)::QAB1(G)
      • Q(a);XR(B)::QAB1(G)
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