MESON Chess Problem Database

Problem Display
PID: 243555 (n7/R3pb2/2k1N3/2B2Q1q/Pp1p2r1/1K1N1r2/2P4n/3Rb2B w - - 0 1)

Castellari, Umberto

Shakhmaty i Shashki, 1932

n7/R3pb2/2k1N3/2B2Q1q/Pp1p2r1/1K1N1r2/2P4n/3Rb2B

#2

10 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe6+
      • 2.Qxe6#
    • 1...Bg6
      • 2.Sd8#
    • 1...Be8
      • 2.Sd8#
    • 1...Sb6
      • 2.Rc7#
    • 1...Sc7
      • 2.Rxc7#
  • Tries
    • 1.Bxf3+?
      • 1...Re4
        • 2.Bxe4#
      • 1...Sxf3!
    • 1.c3?
      • threat
        • 2.Sxb4#
      • 1...Bxe6+
        • 2.Qxe6#
      • 1...bxc3
        • 2.Sb4#
      • 1...dxc3
        • 2.Se5#
      • 1...Sc7
        • 2.Rxc7#
      • 1...Bxc3!
  • Keys
    • 1.c4!
      • threat
        • 2.Sd8#
      • 1...Bxe6
        • 2.Qxe6#
      • 1...bxc4 ep
        • 2.Sb4#
      • 1...dxc4 ep
        • 2.Se5#
      • 1...Qh8
        • 2.Qd5#
      • 1...Rg8
        • 2.Sxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • B(j);CHECK,OGATE,XS(I)::QAR2(H),XB(j)
    • B(j);::S(I)
    • S(k);N_GUARD::R1(J)
    • S(k);N_GUARD::R1(J),XS(k)
  • Tries
    • Try
      • B(B);CHECK,N_SPINS(E),P_SPINS(I),XR(c)
      • Vars
        • R(f);N_GUARD,P_SPINR(f)::B(B),XR(f)
      • Refutation
        • S(b);XB(B)
    • Try
      • P(C);N_SPINS(E),P_SPINS(I)
      • Threat
        • S(E),XP(d)
      • Vars
        • B(j);CHECK,OGATE,XS(I)::QAR2(H),XB(j)
        • P(d);XP(C)::S(E)
        • P(e);XP(C)::S(E)
        • S(k);N_GUARD::R1(J),XS(k)
      • Refutation
        • B(a);XP(C)
  • Actual
    • P(C);
    • Threat
      • S(I)
    • Vars
      • B(j);OGATE,P_PINP(C),XS(I)::QAR2(H),XB(j)
      • P(d);EP,N_PINS(E),P_PINS(I),XP(C)::S(E)
      • P(e);EP,N_PINS(E),P_PINS(I),XP(C)::S(E)
      • Q(g);N_GUARD::QAB1(H)
      • R(f);N_GUARD::S(I),XP(e)
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