MESON Chess Problem Database

Problem Display
PID: 168485 (8/2b5/RBBp4/1n1p2p1/2kP4/1pPN2Q1/1n2qp2/KN6 w - - 0 1)

Petite, Efren

Revista Romana de Sah, 1991

8/2b5/RBBp4/1n1p2p1/2kP4/1pPN2Q1/1n2qp2/KN6

#2

9 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Sxb2#
    • 1...Qf1
      • 2.Sxb2#
    • 1...Qf3
      • 2.Sxb2#
    • 1...Qg4
      • 2.Sxb2#
    • 1...Qh5
      • 2.Sxb2#
    • 1...Qe1
      • 2.Sxb2#
    • 1...Qe3
      • 2.Sxb2#
    • 1...Qe4
      • 2.Sxb2#
    • 1...Qe5
      • 2.Sxb2#
    • 1...Qe6
      • 2.Sxb2#
    • 1...Qe7
      • 2.Sxb2#
    • 1...Qe8
      • 2.Sxb2#
    • 1...Sd1
      • 2.Ra4#
    • 1...Sa4
      • 2.Rxa4#
    • 1...Sxc3
      • 2.Sa3#
  • Tries
    • 1.Sb4?
      • threat
        • 2.Bxd5#
      • 1...Sxc3
        • 2.Qxc3#
      • 1...Sxd4
        • 2.Sa3#
      • 1...Qe4
        • 2.Sd2#
      • 1...Qe5
        • 2.Sd2#
      • 1...Qe6
        • 2.Sd2#
      • 1...Sa3
        • 2.Sxa3#
      • 1...Sa7
        • 2.Sa3#
      • 1...Qf3!
    • 1.Se5+?
      • 1...Qxe5
        • 2.Sd2#
      • 1...dxe5!
  • Keys
    • 1.Ra5!
      • threat
        • 2.Bxb5#
      • 1...Sxc3
        • 2.Sa3#
      • 1...Sxd4
        • 2.Bxd5#
      • 1...Qe8
        • 2.Sxb2#
      • 1...Sa3
        • 2.Bxd5#
      • 1...Sa7
        • 2.Bxd5#

There are these versions: 168307

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 13
  • Sets
    • Q(b);N_GUARD,P_PINS(B)::S(D),XS(a)
    • Q(b);N_GUARD::S(D),XS(a)
    • S(a);N_GUARD::R(G)
    • S(a);N_GUARD::R(G),XS(a)
    • S(f);N_GUARD,SBLOCK,XP(C)::S(B)
  • Tries
    • Try
      • S(D);
      • Threat
        • B(I),XP(g)
      • Vars
        • S(f);OGATE,XP(C)::QAR1(E),XS(f)
        • S(f);N_GUARD,XP(F)::S(B)
        • Q(b);N_GUARD::S(B)
        • S(f);N_GUARD::S(B),XS(f)
        • S(f);N_GUARD::S(B)
      • Refutation
        • Q(b);
    • Try
      • S(D);CHECK
      • Vars
        • Q(b);XS(D)::S(B)
      • Refutation
        • P(i);XS(D)
  • Actual
    • R(G);
    • Threat
      • B(I),XS(f)
    • Vars
      • S(f);N_GUARD,SBLOCK,XP(C)::S(B)
      • S(f);XP(F)::B(I),XP(g)
      • Q(b);N_GUARD::S(D),XS(a)
      • S(f);::B(I),XP(g)
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