MESON Chess Problem Database

Problem Display
PID: 78841 (8/2Q5/3PN1R1/3k1K2/2p1pP2/b2r4/8/5B2 w - - 0 1)

Armeni, Alberto

Problem Observer, 2008

8/2Q5/3PN1R1/3k1K2/2p1pP2/b2r4/8/5B2

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Bxc4#
    • 1...Rd2
      • 2.Bxc4#
    • 1...Rb3
      • 2.Bxc4#
    • 1...Re3
      • 2.Bxc4#
    • 1...Rf3
      • 2.Bxc4#
    • 1...Rg3
      • 2.Bxc4#
    • 1...Rh3
      • 2.Bxc4#
    • 1...Bc1
      • 2.Qc5#
    • 1...Bb2
      • 2.Qc5#
    • 1...Bc5
      • 2.Qxc5#
    • 1...Bxd6
      • 2.Qb7#
    • 1...e3
      • 2.Bg2#
  • Tries
    • 1.Kf6?
      • threat
        • 2.Rg5#
      • 1...Bxd6
        • 2.Qb7#
      • 1...e3
        • 2.Bg2#
      • 1...Rg3
        • 2.Bxc4#
      • 1...Bb2+!
    • 1.Qb6?
      • threat
        • 2.Sc7#
      • 1...Bxd6
        • 2.Qb7#
      • 1...Bc5
        • 2.Qxc5#
      • 1...c3!
  • Keys
    • 1.Rg5!
      • threat
        • 2.Kf6#
      • 1...Bxd6
        • 2.Qb7#
      • 1...Rg3
        • 2.Bxc4#
      • 1...Bb2
        • 2.Qc5#
      • 1...e3
        • 2.Bg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 8
  • Sets
    • R(b);OGATE::B(A),XP(c)
    • R(b);OGATE,P_PINP(B)::B(A),XP(c)
    • B(a);N_GUARD::QAR1(G)
    • B(a);N_GUARD::QAR1(G),XB(a)
    • B(a);SBLOCK,XP(D)::QAB(G)
    • P(d);OGATEB::B(A)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Threat
        • R(F)
      • Vars
        • B(a);SBLOCK,XP(D)::QAB(G)
        • P(d);OGATEB::B(A)
        • R(b);OGATE::B(A),XP(c)
      • Refutation
        • B(a);CHECK
    • Try
      • Q(G);
      • Threat
        • S(E)
      • Vars
        • B(a);SBLOCK,XP(D)::QAB(G)
        • B(a);N_GUARD::QAR1(G),XB(a)
      • Refutation
        • P(c);
  • Actual
    • R(F);
    • Threat
      • R(F)+K(C)
    • Vars
      • B(a);SBLOCK,XP(D)::QAB(G)
      • R(b);OGATE::B(A),XP(c)
      • B(a);N_GUARD::QAR1(G)
      • P(d);OGATEB::B(A)
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