MESON Chess Problem Database

Problem Display
PID: 202301 (1n6/8/b3pRK1/2BNk2p/1pp5/8/8/7Q w - - 0 1)

de Barbieri, Vittorio

Comm., Il Secolo, 1921-1923

1n6/8/b3pRK1/2BNk2p/1pp5/8/8/7Q

#2

5 + 7

6490 yacpdb 2020
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...exd5
      • 2.Qe1#
  • Tries
    • 1.Sc3?
      • threat
        • 2.Qe4#
        • 2.Qe1#
        • 2.Qh2#
        • 2.Qxh5#
      • 1...Bb7
        • 2.Qh2#
        • 2.Qxh5#
      • 1...h4
        • 2.Qe4#
        • 2.Qe1#
        • 2.Qh2#
      • 1...bxc3!
    • 1.Sb6?
      • threat
        • 2.Qe1#
      • 1...Bb7
        • 2.Sxc4#
      • 1...c3!
    • 1.Rf2?
      • threat
        • 2.Re2#
      • 1...exd5
        • 2.Qe1#
      • 1...c3!
    • 1.Rf4?
      • threat
        • 2.Qe4#
        • 2.Qxh5#
      • 1...h4
        • 2.Qe4#
      • 1...exd5!
    • 1.Qd1?
      • threat
        • 2.Qd4#
      • 1...Ke4
        • 2.Rxe6#
        • 2.Qd4#
      • 1...Sc6!
  • Keys
    • 1.Rf3!
      • threat
        • 2.Re3#
      • 1...Ke4
        • 2.Re3#
      • 1...Kxd5
        • 2.Rf5#
      • 1...exd5
        • 2.Qe1#

Anticipated by 150718(1921)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(f);SBLOCK,XS(C)::QAR(A)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(4)
      • Refutation
        • P(a);XS(C)
    • Try
      • S(C);
      • Threat
        • QAR(A)
      • Vars
        • B(e);N_GUARD::S(C),XP(b)
      • Refutation
        • P(b);
    • Try
      • R(D);
      • Threat
        • R(D)
      • Vars
        • P(f);SBLOCK,XS(C)::QAR(A)
      • Refutation
        • P(b);
    • Try
      • R(D);
      • Threat
        • DUALS(2)
      • Vars
        • P(d);::QAR1(A)
      • Refutation
        • P(f);XS(C)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • S(g);
  • Actual
    • R(D);
    • Threat
      • R(D)
    • Vars
      • K(c);P-FLIGHT::QAB(A)+R(D),DCHECK
      • K(c);P-FLIGHT,XS(C)::QAB(A)+R(D),DCHECK
      • P(f);SBLOCK,XS(C)::QAR(A)
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Developed and maintained by Brian Stephenson.
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