MESON Chess Problem Database

Problem Display
PID: 234042 (3N2bb/1pR1Q3/1p1P3p/3k4/3PN3/3R1K2/1qp5/8 w - - 0 1)

Piatesi, Antonio

Il Due Mosse, 1955

3N2bb/1pR1Q3/1p1P3p/3k4/3PN3/3R1K2/1qp5/8

#2

8 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Sc3#
    • 1...Qc3
      • 2.Sxc3#
    • 1...Qxd4
      • 2.Sc3#
    • 1...Qb1
      • 2.Sc3#
    • 1...Qa2
      • 2.Sc3#
    • 1...Qb5
      • 2.Sc3#
    • 1...Be6
      • 2.Qxe6#
    • 1...Bf7
      • 2.Qxf7#
    • 1...Bh7
      • 2.Qe6#
      • 2.Qf7#
    • 1...Bxd4
      • 2.Sf6#
    • 1...Be5
      • 2.Qxe5#
    • 1...Bf6
      • 2.Sxf6#
    • 1...b5
      • 2.Rc5#
  • Tries
    • 1.Qg5+?
      • 1...Be5
        • 2.Qxe5#
        • 2.Qxg8#
      • 1...hxg5!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Qxg8#
      • 1...Qxd4
        • 2.Qb5#
      • 1...Bxd4
        • 2.Qh5#
      • 1...Be6
        • 2.Qxe6#
      • 1...Bf7
        • 2.Qxf7#
      • 1...Bh7
        • 2.Qf7#
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 8
  • Sets
    • Q(a);N_GUARD::S(D)
    • Q(a);N_GUARD,P_PINR(A)::S(D),XQ(a)
    • Q(a);N_GUARD,P_SPINQ(a),XP(C)::S(D)
    • B(g);N_GUARD::QAB1(G),XB(g)
    • B(g);N_GUARD::QAB(G),XB(g)
    • B(h);N_GUARD,P_SPINB(h),XP(C)::S(D)
    • B(h);N_GUARD::QAR1(G),XB(h)
    • B(h);N_GUARD::S(D),XB(h)
    • P(d);N_GUARD::R1(F)
  • Tries
    • Try
      • Q(G);CHECK
      • Refutation
        • P(e);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAB(G),XB(g)
    • Vars
      • Q(a);N_GUARD,P_SPINQ(a),XP(C)::QAR2(G)
      • B(h);N_GUARD,P_SPINB(h),XP(C)::QAR(G)
      • B(g);N_GUARD::QAB1(G),XB(g)
      • B(g);N_GUARD::QAB(G),XB(g)
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