MESON Chess Problem Database

Problem Display
PID: 168425 (1B1Rn2K/4pb2/P1k1P3/5PQ1/N1P2P2/N6p/1r1rp3/2n5 w - - 0 1)

Petite, Efren

Problemas, 2015

1B1Rn2K/4pb2/P1k1P3/5PQ1/N1P2P2/N6p/1r1rp3/2n5

#2

11 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rb5
      • 2.cxb5#
    • 1...Rd5
      • 2.cxd5#
    • 1...Sf6
      • 2.Rc8#
    • 1...Sg7
      • 2.Rc8#
  • Tries
    • 1.Qxe7?
      • threat
        • 2.Qc5#
      • 1...Rb5
        • 2.cxb5#
      • 1...Rd5
        • 2.cxd5#
      • 1...Sb3
        • 2.Qb7#
      • 1...Sd3
        • 2.Qd7#
      • 1...Sd6
        • 2.Qc7#
        • 2.Qd7#
      • 1...Rd6!
    • 1.Qg1?
      • threat
        • 2.Qc5#
      • 1...Rb5
        • 2.cxb5#
      • 1...Rd5
        • 2.cxd5#
      • 1...Sb3
        • 2.Qb6#
      • 1...Sd3
        • 2.Qh1#
      • 1...Rd4!
    • 1.Qg2+?
      • 1...Rd5
        • 2.Qxd5#
        • 2.cxd5#
      • 1...hxg2!
  • Keys
    • 1.f6!
      • threat
        • 2.Qc5#
      • 1...Rb5
        • 2.Qxb5#
        • 2.cxb5#
      • 1...Rd5
        • 2.Qxd5#
        • 2.cxd5#
      • 1...Sb3
        • 2.Qb5#
      • 1...Sd3
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(b);OGATE::P(C),XR(b)
    • R(c);OGATE::P(C),XR(c)
    • S(i);N_GUARD::R(J)
  • Tries
    • Try
      • Q(F);XP(g)
      • Threat
        • QAR1(F)
      • Vars
        • R(b);OGATE::P(C),XR(b)
        • R(c);OGATE::P(C),XR(c)
        • S(a);S_CUTR(b)::QAB1(F)
        • S(a);S_CUTR(c)::QAB1(F)
      • Refutation
        • R(c);
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • R(b);OGATE::P(C),XR(b)
        • R(c);OGATE::P(C),XR(c)
        • S(a);S_CUTR(b)::QAR1(F)
        • S(a);S_CUTR(c)::QAB(F)
      • Refutation
        • R(c);
    • Try
      • Q(F);CHECK
      • Refutation
        • P(e);XQ(F)
  • Actual
    • P(E);
    • Threat
      • QAR1(F)
    • Vars
      • S(a);S_CUTR(b)::QAB1(F)
      • S(a);S_CUTR(c)::QAB1(F)
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