MESON Chess Problem Database

Problem Display
PID: 102699 (1bb5/3p3K/6p1/r5p1/4N2k/2Q5/8/2BB4 w - - 0 1)

Pirrone, Santi

Europe Echecs, 1962

1bb5/3p3K/6p1/r5p1/4N2k/2Q5/8/2BB4

#2

5 + 7

35 L'Italia Scacchistica 1985
14744 Nuova Antologia dei Problemisti Italiani 1992
4901 Best Problems 2006
35 L'Italia Scacchistica 2006
6490 yacpdb 2009
136 Problem Observer 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Bxg5#
    • 1...Ra2
      • 2.Bxg5#
    • 1...Ra3
      • 2.Bxg5#
    • 1...Ra4
      • 2.Bxg5#
    • 1...Re5
      • 2.Qg3#
    • 1...Ra6
      • 2.Bxg5#
    • 1...Ra7
      • 2.Bxg5#
    • 1...Ra8
      • 2.Bxg5#
    • 1...Bg3
      • 2.Qxg3#
    • 1...Be5
      • 2.Bxg5#
    • 1...Ba7
      • 2.Qg3#
    • 1...d5
      • 2.Bxg5#
    • 1...d6
      • 2.Qg3#
  • Tries
    • 1.Kg8?
      • threat
        • 2.Qh8#
      • 1...Re5
        • 2.Qg3#
      • 1...Be5
        • 2.Bxg5#
      • 1...g4!
    • 1.Qe1+?
      • 1...Bg3
        • 2.Qxg3#
      • 1...Kh3!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qg4#
      • 1...g4
        • 2.Qxg4#
      • 1...d5
        • 2.Bxg5#
      • 1...d6
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 11
  • Sets
    • R(b);N_GUARD::B(A),XP(c)
    • R(b);S_CUTB(f)::QAB1(C)
    • R(b);N_GUARD,SBLOCK::B(A),XP(c)
    • B(f);N_GUARD::QAB1(C),XB(f)
    • B(f);S_CUTR(b)::B(A),XP(c)
    • B(f);N_GUARD::QAB1(C)
    • P(e);S_CUTR(b)::B(A),XP(c)
    • P(e);S_CUTB(f)::QAB1(C)
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Threat
        • QAR(C)
      • Vars
        • R(b);S_CUTB(f)::QAB1(C)
        • B(f);S_CUTR(b)::B(A),XP(c)
      • Refutation
        • P(c);
    • Try
      • Q(C);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAB1(C),XB(f)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • P(c);::QAR1(C),XP(c)
      • P(e);S_CUTR(b)::B(A),XP(c)
      • P(e);S_CUTB(f)::QAB1(C)
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