MESON Chess Problem Database

Problem Display
PID: 12143 (8/4N3/4p3/5p2/1K1Nk3/8/5Q2/8 w - - 0 1)

di Vincenzi, Renato

Unpublished, 1975

8/4N3/4p3/5p2/1K1Nk3/8/5Q2/8

#2

4 + 3

5454 Near Snap 2008

SOLUTION

  • SOUND
  • Tries
    • 1.Kc3?
      • 1...f4
        • 2.Qe1#
        • 2.Qe2#
      • 1...e5
        • 2.Qf3#
      • 1...Ke5!
    • 1.Kc4?
      • 1...f4
        • 2.Qe1#
        • 2.Qe2#
      • 1...e5
        • 2.Qf3#
      • 1...Ke5!
    • 1.Sc2?
      • threat
        • 2.Qe3#
      • 1...Ke5
        • 2.Qd4#
      • 1...f4
        • 2.Qe2#
      • 1...Kd3!
    • 1.Sxe6?
      • threat
        • 2.Qe2#
      • 1...Kd3
        • 2.Sc5#
      • 1...Ke5!
    • 1.Sec6?
      • threat
        • 2.Qf3#
      • 1...Kd3
        • 2.Qe2#
      • 1...Kd5!
    • 1.Qf3+?
      • 1...Kxd4
        • 2.Sc6#
      • 1...Ke5!
  • Keys
    • 1.Sb3!
      • 1...Kd3
        • 2.Sc5#
      • 1...Ke5
        • 2.Qd4#
      • 1...f4
        • 2.Qe2#
      • 1...e5
        • 2.Sc5#

Anticipated by 55433(1895)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • P(c);SBLOCK::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • K(B);P-FLIGHT
      • Vars
        • P(c);SBLOCK::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(C);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
        • P(b);SBLOCK::QAR2(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);XP(c)
      • Threat
        • QAR2(A)
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(D);
      • Threat
        • QAB1(A)
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(C)::S(D)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT::S(C)
      • K(a);P-FLIGHT::QAB1(A)
      • P(b);SBLOCK::QAR2(A)
      • P(c);SBLOCK::S(C)
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