MESON Chess Problem Database

Problem Display
PID: 238570 (1B3RN1/1P1k2P1/rqr5/b1pn1P2/Bpp5/1N3b2/2nR1Q2/6K1 w - - 0 1)

Labai, Zoltan

2nd HM., Problemist Ukraini, 2010

1B3RN1/1P1k2P1/rqr5/b1pn1P2/Bpp5/1N3b2/2nR1Q2/6K1

#2

11 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qd8
      • 2.Sxc5#
    • 1...Qxb7
      • 2.Sxc5#
    • 1...Bd1
      • 2.Rxd5#
    • 1...Be2
      • 2.Rxd5#
    • 1...Bg4
      • 2.Rxd5#
    • 1...Bh5
      • 2.Rxd5#
  • Tries
    • 1.Qg3?
      • threat
        • 2.Qd6#
      • 1...Qc7
        • 2.Sxc5#
      • 1...Qb5!
    • 1.Qh4?
      • threat
        • 2.Qe7#
      • 1...Qd8
        • 2.Sxc5#
      • 1...Sd4!
    • 1.Qh2?
      • threat
        • 2.Qd6#
      • 1...Qc7
        • 2.Sxc5#
      • 1...Qb5!
  • Keys
    • 1.Qxc5!
      • threat
        • 2.Sf6#
      • 1...Qxc5+
        • 2.Sxc5#
      • 1...Qd8
        • 2.Qd6#
      • 1...Qb5
        • 2.Qe7#
      • 1...Sd4
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • Q(i);N_GUARD::S(D),XP(f)
    • Q(i);N_GUARD,XP(G)::S(D),XP(f)
    • B(b);N_GUARD::R(B),XS(g)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • Q(i);N_GUARD::S(D),XP(f)
      • Refutation
        • Q(i);N_SPINR(j)
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • Q(i);N_GUARD::S(D),XP(f)
      • Refutation
        • S(a);N_SPINS(g)
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • Q(i);N_GUARD::S(D),XP(f)
      • Refutation
        • Q(i);N_SPINR(j)
  • Actual
    • Q(C);P_SPINQ(C),XP(f)
    • Threat
      • S(K)
    • Vars
      • Q(i);CHECK,XQ(C)::S(D),XQ(i)
      • Q(i);N_PINQ(C)::QAR1(C)
      • Q(i);N_PINQ(C),N_SPINR(j)::QAR1(C)
      • S(a);N_PINQ(C),N_SPINS(g)::QAR1(C)
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