MESON Chess Problem Database

Problem Display
PID: 227940 (K7/2Npn3/3B3p/3BP2r/1Ppk4/Q4PP1/p3P3/6b1 w - - 0 1)

Antonov, Yuri Mikhailovich

Tidskrift for Schack, 1978

K7/2Npn3/3B3p/3BP2r/1Ppk4/Q4PP1/p3P3/6b1

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe5
      • 2.Bc5#
    • 1...Bh2
      • 2.e3#
    • 1...Sxd5
      • 2.Sb5#
    • 1...c3
      • 2.Qa7#
  • Tries
    • 1.Bf7?
      • threat
        • 2.Sb5#
      • 1...c3
        • 2.Qa7#
      • 1...Rxe5!
    • 1.Qb2+?
      • 1...Ke3
        • 2.Bc5#
      • 1...c3!
  • Keys
    • 1.Qxa2!
      • threat
        • 2.Qd2#
      • 1...Kc3
        • 2.Sb5#
      • 1...Ke3
        • 2.Bc5#
      • 1...Be3
        • 2.Qxc4#
      • 1...c3
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(e);SBLOCK,XP(G)::B(H)
    • B(a);N_GUARD::P(A)
    • S(h);SBLOCK,XB(F)::S(I)
    • P(c);SBLOCK::QAB(B)
  • Tries
    • Try
      • B(F);
      • Threat
        • S(I)
      • Vars
        • P(c);SBLOCK::QAB(B)
      • Refutation
        • R(e);XP(G)
    • Try
      • Q(B);CHECK
      • Vars
        • K(d);S_FLIGHT::B(H)
      • Refutation
        • P(c);P_SPINP(c)
  • Actual
    • Q(B);XP(b)
    • Threat
      • QAR2(B)
    • Vars
      • K(d);S_FLIGHT::S(I)
      • K(d);S_FLIGHT::B(H)
      • B(a);SBLOCK::QAR1(B),XP(c)
      • P(c);SBLOCK::QAB(B)
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