MESON Chess Problem Database

Problem Display
PID: 234035 (4K3/P1p1p3/2r2p2/1N1kpN2/1Pr3P1/6B1/Q3P3/8 w - - 0 1)

Piatesi, Antonio

Il Due Mosse, 1952

4K3/P1p1p3/2r2p2/1N1kpN2/1Pr3P1/6B1/Q3P3/8

#2

9 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...e6
      • 2.Sc3#
  • Tries
    • 1.Qd2+?
      • 1...Ke4
        • 2.Qd3#
      • 1...Ke6
        • 2.Sg7#
        • 2.Qd7#
      • 1...Rd4!
    • 1.e4+?
      • 1...Ke6
        • 2.Sg7#
      • 1...Kxe4!
    • 1.a8B?
      • 1...Ke4
        • 2.Qxc4#
      • 1...e4
        • 2.Sxc7#
      • 1...e6
        • 2.Sc3#
      • 1...Ke6!
  • Keys
    • 1.a8Q!
      • 1...Ke4
        • 2.Qxc4#
      • 1...Ke6
        • 2.Qxc6#
      • 1...e4
        • 2.Sxc7#
      • 1...e6
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(g);SBLOCK::S(F)
  • Tries
    • Try
      • Q(A);CHECK,N_PINR(a)
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • R(a);P_SPINR(a)
    • Try
      • P(B);CHECK
      • Vars
        • K(b);S_FLIGHT::S(G)
      • Refutation
        • K(b);N_SPINR(a),S_FLIGHT,XP(B)
    • Try
      • P(H);
      • Vars
        • K(b);N_SPINR(a),P_SPINR(d),S_FLIGHT::QAR2(A),XR(a)
        • P(c);SBLOCK::S(F),XP(f)
        • P(g);SBLOCK::S(F)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • P(H);
    • Vars
      • K(b);N_SPINR(a),P_SPINR(d),S_FLIGHT::QAR2(A),XR(a)
      • K(b);S_FLIGHT::QAR2(H),XR(d)
      • P(c);SBLOCK::S(F),XP(f)
      • P(g);SBLOCK::S(F)
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