MESON Chess Problem Database

Problem Display
PID: 41974 (3R4/2n1P1Pn/4P1BP/2p1PN2/2p1k2P/4B2R/1Q3P1b/K6b w - - 0 1)

Bottacchi, Antonio

In Traway (Lo Scacchistica), 1920

3R4/2n1P1Pn/4P1BP/2p1PN2/2p1k2P/4B2R/1Q3P1b/K6b

#2

14 + 7

3360 Simple Two-move Themes 1924
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bf3
      • 2.Sg3#
    • 1...Bxe5
      • 2.Sd4#
    • 1...Sd5
      • 2.Sd6#
  • Tries
    • 1.Bg5?
      • threat
        • 2.Se3#
        • 2.Re3#
        • 2.Qe2#
      • 1...Bxe5
        • 2.Se3#
        • 2.Sd4#
        • 2.Re3#
      • 1...Bg3
        • 2.Qe2#
      • 1...c3
        • 2.Re3#
        • 2.Qe2#
      • 1...Bf3
        • 2.Se3#
        • 2.Sg3#
      • 1...Bf4
        • 2.Se3#
      • 1...Sd5
        • 2.Se3#
        • 2.Sd6#
      • 1...Sf8
        • 2.Re3#
        • 2.Qe2#
      • 1...Sxg5!
    • 1.Rd4+?
      • 1...cxd4
        • 2.Qxd4#
      • 1...Kxe5!
    • 1.Qb7+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...Kxe5!
  • Keys
    • 1.Bc1!
      • threat
        • 2.Qe2#
      • 1...Bxe5
        • 2.Sd4#
      • 1...Bf3
        • 2.Sg3#
      • 1...Bf4
        • 2.Se3#
      • 1...Sd5
        • 2.Sd6#

This anticipates 79077(2007)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK::B(J)+S(H),DCHECK
    • B(b);P_PINQ(B),SBLOCK,XP(G)::B(J)+S(H)
    • S(f);SBLOCK::B(J)+S(H),DCHECK
  • Tries
    • Try
      • B(D);
      • Threat
        • DUALS(3)
      • Vars
        • B(b);::QAR2(B)
        • B(b);::B(J)+S(H)
      • Refutation
        • S(g);XB(D)
    • Try
      • R(N);CHECK
      • Vars
        • P(e);OGATE,XR(N)::QAR1(B),XP(e)
      • Refutation
        • K(d);P-FLIGHT,XP(G)
    • Try
      • Q(B);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::QAB1(B),XS(f)
      • Refutation
        • K(d);P-FLIGHT,XP(G)
  • Actual
    • B(D);
    • Threat
      • QAR2(B)
    • Vars
      • B(b);P_PINQ(B),SBLOCK,XP(G)::B(J)+S(H)
      • B(a);SBLOCK::B(J)+S(H),DCHECK
      • B(b);SBLOCK::B(J)+S(H)
      • S(f);SBLOCK::B(J)+S(H),DCHECK
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