MESON Chess Problem Database

Problem Display
PID: 265620 (2Q3b1/b3p2n/1N3r1q/7p/5k1P/4R3/1r1P4/B2B1N1K w - - 0 1)

Parcerisa, Jose Antonio Lopez

Candela MT (Problemas), 2018

2Q3b1/b3p2n/1N3r1q/7p/5k1P/4R3/1r1P4/B2B1N1K

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Be5#
    • 1...Ra2
      • 2.Be5#
    • 1...Rc2
      • 2.Be5#
    • 1...Rxd2
      • 2.Be5#
    • 1...Rb3
      • 2.Be5#
    • 1...Rb4
      • 2.Be5#
    • 1...Rbxb6
      • 2.Be5#
    • 1...Rf7
      • 2.Sd5#
    • 1...Bd5+
      • 2.Sxd5#
  • Tries
    • 1.Qh3?
      • threat
        • 2.Qf3#
      • 1...Bd5+
        • 2.Sxd5#
      • 1...Sg5!
    • 1.Qc4+?
      • 1...Kf5
        • 2.Qe4#
      • 1...Bxc4!
  • Keys
    • 1.Sg3!
      • threat
        • 2.Se2#
      • 1...Bd5+
        • 2.Sxd5#
      • 1...Rxd2
        • 2.Rf3#
      • 1...Rf5
        • 2.Qxf5#
      • 1...Re6
        • 2.Sd5#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Be6
        • 2.Qc7#
      • 1...e6
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 7
  • Sets
    • R(a);OGATE::B(A)
    • R(a);OGATE,XP(E)::B(A)
    • R(a);OGATE,XS(H)::B(A)
    • R(d);S_CUTB(i)::S(H)
    • B(i);CHECK,N_GUARD::S(H),XB(i)
  • Tries
    • Try
      • Q(I);
      • Threat
        • QAR1(I)
      • Vars
        • B(i);CHECK,N_GUARD::S(H),XB(i)
      • Refutation
        • S(h);
    • Try
      • Q(I);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(I)
      • Refutation
        • B(i);XQ(I)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • B(i);CHECK,N_GUARD::S(H),XB(i)
      • R(a);XP(E)::R1(F)
      • R(d);N_GUARD::QAR1(I),XR(d)
      • R(d);S_CUTB(i)::S(H)
      • B(i);N_GUARD::QAR(I),XB(i)
      • B(i);S_CUTP(g),S_CUTR(d)::QAB(I)
      • P(g);S_CUTB(i)::QAR(I)
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