MESON Chess Problem Database

Problem Display
PID: 21379 (B3N1K1/1n1p2B1/2r5/3k4/Q2N4/5P2/8/2b5 w - - 0 1)

Bottacchi, Antonio

5th HM., L'Italia Scacchistica, 1918

B3N1K1/1n1p2B1/2r5/3k4/Q2N4/5P2/8/2b5

#2

7 + 5

3391 Het Half Pin Thema 1924
3360 Simple Two-move Themes 1924
887 Mate in Two Moves 1931
5501 Chess Cameos 1936
3147 Chess Problems: Introduction to an Art 1963
15 British Chess Magazine 1993
3310 2345 Chess Problems 1997
56 The Problemist 2006
4901 Best Problems 2008
5454 Near Snap 2010
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qb5#
    • 1...Ra6
      • 2.Qb5#
    • 1...Rd6
      • 2.Qb5#
    • 1...Re6
      • 2.Qb5#
    • 1...Rg6
      • 2.Qb5#
    • 1...Rh6
      • 2.Qb5#
    • 1...Sa5
      • 2.Qb5#
    • 1...Sd8
      • 2.Qb5#
    • 1...d6
      • 2.Qxc6#
  • Tries
    • 1.Sb3?
      • threat
        • 2.Qe4#
      • 1...Ke6
        • 2.Qe4#
      • 1...Rc4
        • 2.Qxd7#
      • 1...Re6
        • 2.Qb5#
      • 1...Sd6
        • 2.Sc7#
      • 1...Sc5!
    • 1.Bxb7?
      • threat
        • 2.Qb5#
      • 1...Kc5
        • 2.Qb5#
      • 1...Ba3!
    • 1.Qb3+?
      • 1...Kc5
        • 2.Qb5#
      • 1...Rc4!
    • 1.Qb5+?
      • 1...Rc5
        • 2.Bxb7#
      • 1...Sc5!
  • Keys
    • 1.Se6!
      • threat
        • 2.Qe4#
      • 1...Kxe6
        • 2.Qe4#
      • 1...Rxe6
        • 2.Qb5#
      • 1...dxe6
        • 2.Qd4#
      • 1...Rc4
        • 2.Qxd7#
      • 1...Sc5
        • 2.S6c7#
      • 1...Sd6
        • 2.S8c7#

This anticipates 196696(1919), 163789(1953), 135730(1961)

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 8
  • Sets
    • K(b);P-FLIGHT::QAR1(B)
    • R(c);N_GUARD,P_SPINS(d)::QAR2(B)
    • R(c);N_GUARD,P_PINB(D),P_SPINS(d)::QAR2(B)
    • S(d);N_GUARD,P_SPINR(c)::QAR2(B)
    • P(e);N_GUARD::QAB1(B),XR(c)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(B)
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
        • R(c);OGATE,P_SPINS(d),SBLOCK::QAR2(B),XP(e)
        • R(c);N_GUARD,P_SPINS(d),SBLOCK::QAR2(B)
        • S(d);P_SPINR(c),SBLOCK::S(F)
      • Refutation
        • S(d);P_SPINR(c)
    • Try
      • B(E);P_PINR(c),XS(d)
      • Threat
        • QAR2(B)
      • Vars
        • K(b);N_SPINR(c),P-FLIGHT::QAR1(B)
      • Refutation
        • B(a);
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • R(c);P_SPINR(c),P_SPINS(d)
    • Try
      • Q(B);CHECK
      • Vars
        • R(c);P_SPINR(c),P_SPINS(d)::B(E),XS(d)
      • Refutation
        • S(d);P_SPINR(c),P_SPINS(d)
  • Actual
    • S(C);
    • Threat
      • QAB1(B)
    • Vars
      • K(b);S_FLIGHT,XS(C)::QAR2(B)
      • R(c);N_GUARD,P_SPINS(d),SBLOCK,XS(C)::QAR2(B)
      • P(e);SBLOCK,XS(C)::QAR1(B)
      • R(c);OGATE,P_SPINS(d),SBLOCK::QAR2(B),XP(e)
      • S(d);P_SPINR(c),SBLOCK::S(C)
      • S(d);P_SPINR(c),SBLOCK::S(F)
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