MESON Chess Problem Database

Problem Display
PID: 261062 (3Bb2K/3R1p1B/2p2P1N/4k1p1/1b2n3/q2p1R2/Q2p4/2N2rr1 w - - 0 1)

Armeni, Alberto

Neue Zurcher Zeitung, 2011

3Bb2K/3R1p1B/2p2P1N/4k1p1/1b2n3/q2p1R2/Q2p4/2N2rr1

#2

9 + 12

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.Sxd3#
    • 1...Qa4
      • 2.Sxd3#
    • 1...Qa5
      • 2.Sxd3#
    • 1...Qa7
      • 2.Sxd3#
    • 1...Qa8
      • 2.Sxd3#
    • 1...Rxc1
      • 2.Rf5#
    • 1...Rd1
      • 2.Rf5#
    • 1...Re1
      • 2.Rf5#
    • 1...Rh1
      • 2.Sg4#
    • 1...Rg4
      • 2.Sxg4#
    • 1...Bc3
      • 2.Sxd3#
    • 1...Sc3
      • 2.Sxd3#
    • 1...Sg3
      • 2.Sg4#
    • 1...Sc5
      • 2.Bc7#
    • 1...Sxf6
      • 2.Bxf6#
    • 1...c5
      • 2.Qd5#
  • Tries
    • 1.Rd5+?
      • 1...Ke6
        • 2.Bf5#
      • 1...cxd5!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qxe4#
      • 1...Bxd7
        • 2.Sxf7#
      • 1...Sxf6
        • 2.Bxf6#
      • 1...Re1
        • 2.Rf5#
      • 1...Rg4
        • 2.Sxg4#
      • 1...Sf2
        • 2.Rf5#
      • 1...Sc3
        • 2.Sxd3#
      • 1...Sg3
        • 2.Sg4#
      • 1...Sc5
        • 2.Bc7#
      • 1...Sd6
        • 2.Re7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 10
  • Sets
    • Q(d);N_GUARD::S(A),XP(e)
    • R(a);N_GUARD,XS(A)::R1(C)
    • R(a);N_GUARD::R1(C)
    • R(b);N_GUARD::S(E)
    • R(b);N_GUARD::S(E),XR(b)
    • B(f);S_CUTQ(d)::S(A),XP(e)
    • S(g);S_CUTQ(d)::S(A),XP(e)
    • S(g);S_CUTR(b)::S(E)
    • S(g);N_GUARD,S_CUTB(f)::B(H)
    • S(g);OGATE,XP(D)::B(H),XS(g)
    • P(j);N_GUARD::QAR1(B)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(h);P-FLIGHT,S_CUTP(j)::B(G)
      • Refutation
        • P(j);XR(F)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B),XS(g)
    • Vars
      • B(l);N_GUARD,XR(F)::S(E),XP(k)
      • S(g);OGATE,XP(D)::B(H),XS(g)
      • R(a);N_GUARD::R1(C)
      • R(b);N_GUARD::S(E),XR(b)
      • S(g);S_CUTR(a)::R1(C)
      • S(g);S_CUTQ(d)::S(A),XP(e)
      • S(g);S_CUTR(b)::S(E)
      • S(g);N_GUARD,S_CUTB(f)::B(H)
      • S(g);SBLOCK,S_CUTB(f)::R(F)
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