MESON Chess Problem Database

Problem Display
PID: 264933 (3rn1b1/8/2N3BK/3P1R2/2p1kNp1/7p/3pq3/2nQ2B1 w - - 0 1)

Vladimirov, Yakov Georgevich

The Problemist Supplement, 2022

3rn1b1/8/2N3BK/3P1R2/2p1kNp1/7p/3pq3/2nQ2B1

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Rf6#
      • 2.Rf7#
      • 2.Rf8#
    • 1...Qd3
      • 2.Rf6#
      • 2.Rf7#
      • 2.Rf8#
    • 1...Qf3
      • 2.Rf6#
      • 2.Rf7#
      • 2.Rf8#
    • 1...Qe1
      • 2.Rf6#
      • 2.Rf7#
      • 2.Rf8#
    • 1...Qg2
      • 2.Rf6#
      • 2.Rf7#
      • 2.Rf8#
    • 1...Qh2
      • 2.Rf6#
      • 2.Rf7#
      • 2.Rf8#
    • 1...Qe3
      • 2.Rf6#
      • 2.Rf7#
      • 2.Rf8#
    • 1...Sa2
      • 2.Qxe2#
    • 1...Sb3
      • 2.Qxe2#
    • 1...Sd3
      • 2.Qxe2#
  • Tries
    • 1.Se6?
      • threat
        • 2.Sc5#
      • 1...Qe3+
        • 2.Rg5#
      • 1...Kd3
        • 2.Rf3#
      • 1...Rxd5
        • 2.Rf4#
      • 1...Qf2
        • 2.Re5#
      • 1...Sb3
        • 2.Qxe2#
      • 1...Sd3
        • 2.Sg5#
        • 2.Qxe2#
      • 1...Bxe6!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Sc5#
      • 1...Qe3+
        • 2.Rg5#
      • 1...Kxd3
        • 2.Rf3#
      • 1...Qxd3
        • 2.Qxg4#
      • 1...Rxd5
        • 2.Rf4#
      • 1...Sxd3
        • 2.Qxe2#
      • 1...cxd3
        • 2.Qa4#
      • 1...Qf2
        • 2.Re5#
      • 1...Sb3
        • 2.Qxe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • S(a);N_GUARD::QAR2(A),XQ(c)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • Q(c);CHECK::B(G)+R(E)
        • K(f);N_GUARD,P_SPINP(b),S_FLIGHT::B(G)+R(E),DCHECK
        • R(h);SBLOCK,XP(D)::B(G)+R(E),DCHECK
        • Q(c);::B(G)+R(E),DCHECK
        • S(a);N_GUARD::QAR2(A),XQ(c)
      • Refutation
        • B(j);XS(C)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • Q(c);CHECK::B(G)+R(E)
      • K(f);N_GUARD,P_SPINP(b),S_FLIGHT,XS(C)::B(G)+R(E),DCHECK
      • Q(c);OGATE,SBLOCK,XS(C)::QAR2(A),XP(g)
      • R(h);SBLOCK,XP(D)::B(G)+R(E),DCHECK
      • S(a);N_GUARD,XS(C)::QAR2(A),XQ(c)
      • P(e);OGATEB,SBLOCK,XS(C)::QAR(A)
      • Q(c);::B(G)+R(E),DCHECK
      • S(a);N_GUARD::QAR2(A),XQ(c)
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