MESON Chess Problem Database

Problem Display
PID: 70709 (4K3/8/1p2N3/1Pp1kP2/4p3/2p1N1P1/2P1Q3/8 w - - 0 1)

Prete, Rodolfo

2nd HM., Il Due Mosse TT, 1958

4K3/8/1p2N3/1Pp1kP2/4p3/2p1N1P1/2P1Q3/8

#2

8 + 5

SOLUTION

  • SOUND
  • Tries
    • 1.Qd1?
      • 1...c4
        • 2.Qd4#
      • 1...Kf6!
    • 1.Qf1?
      • 1...Kd6
        • 2.Qf4#
      • 1...Kf6
        • 2.Sg4#
      • 1...c4!
    • 1.Qd3?
      • 1...Kf6
        • 2.Qxc3#
      • 1...c4
        • 2.Qd4#
      • 1...exd3!
    • 1.Qg4?
      • 1...Kd6
        • 2.Qf4#
      • 1...Kf6
        • 2.Qg7#
      • 1...c4!
    • 1.Qd2?
      • 1...Kf6
        • 2.Qxc3#
      • 1...c4
        • 2.Qd4#
      • 1...cxd2!
    • 1.Qf2?
      • 1...Kd6
        • 2.Qf4#
      • 1...Kf6
        • 2.Sg4#
      • 1...c4!
    • 1.Qh2?
      • 1...Kd6
        • 2.g4#
      • 1...Kf6
        • 2.Qh8#
      • 1...c4!
  • Keys
    • 1.Qc4!
      • 1...Kd6
        • 2.Qd5#
      • 1...Kf6
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Vars
        • P(c);N_GUARD::QAB1(B)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(d);S_FLIGHT::QAB(B)
        • K(d);S_FLIGHT::S(C)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Vars
        • K(d);S_FLIGHT::QAB(B),XP(a)
        • P(c);N_GUARD::QAB1(B)
      • Refutation
        • P(b);XQ(B)
    • Try
      • Q(B);
      • Vars
        • K(d);S_FLIGHT::QAB(B)
        • K(d);S_FLIGHT::QAB1(B)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Vars
        • K(d);S_FLIGHT::QAB(B),XP(a)
        • P(c);N_GUARD::QAB1(B)
      • Refutation
        • P(a);XQ(B)
    • Try
      • Q(B);
      • Vars
        • K(d);S_FLIGHT::QAB(B)
        • K(d);S_FLIGHT::S(C)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Vars
        • K(d);S_FLIGHT::QAB(B)+P(D)
        • K(d);S_FLIGHT::QAB(B)
      • Refutation
        • P(c);
  • Actual
    • Q(B);
    • Vars
      • K(d);S_FLIGHT::QAR1(B)
      • K(d);S_FLIGHT::QAB(B),XP(a)
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