MESON Chess Problem Database

Problem Display
PID: 243149 (2N1b3/1np5/1bk1B3/1pN3R1/1R6/8/1p5K/Q1n5 w - - 0 1)

Banny, Dimitry Nikolaevich

Sachove umeni (Ceskoslovensky sach), 1970

2N1b3/1np5/1bk1B3/1pN3R1/1R6/8/1p5K/Q1n5

#2

7 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bh5
      • 2.Bd7#
    • 1...Bg6
      • 2.Bd7#
    • 1...Bd7
      • 2.Bxd7#
    • 1...Bf7
      • 2.Bd7#
    • 1...Sa2
      • 2.Qh1#
    • 1...Se2
      • 2.Qh1#
    • 1...Sb3
      • 2.Qh1#
    • 1...Sd3
      • 2.Qh1#
    • 1...Sd6
      • 2.Se7#
  • Tries
    • 1.Bc4?
      • threat
        • 2.Bxb5#
      • 1...bxc4
        • 2.Qa4#
      • 1...Sd6
        • 2.Se7#
      • 1...Sxc5!
    • 1.Qb1?
      • threat
        • 2.Qe4#
      • 1...Bg6
        • 2.Bd7#
      • 1...Sd3
        • 2.Qh1#
      • 1...Sd6
        • 2.Se7#
      • 1...Sxc5!
    • 1.Qa6?
      • threat
        • 2.Qxb5#
        • 2.Qxb7#
      • 1...Sa5
        • 2.Qxb5#
      • 1...Sd6
        • 2.Sa7#
        • 2.Se7#
      • 1...Sd8
        • 2.Qxb5#
      • 1...Sxc5!
  • Keys
    • 1.Rc4!
      • threat
        • 2.Bd5#
      • 1...Bxc5
        • 2.Qa6#
      • 1...Sxc5
        • 2.Qa8#
      • 1...bxc4
        • 2.Qa4#
      • 1...b4
        • 2.Qa4#
      • 1...Bf7
        • 2.Bd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • B(h);N_GUARD::B(F)
    • B(h);N_GUARD::B(F),XB(h)
    • S(a);OGATE::QAB(A)
    • S(f);SBLOCK::S(G)
  • Tries
    • Try
      • B(F);
      • Threat
        • B(F),XP(c)
      • Vars
        • P(c);OGATEB,XB(F)::QAB(A)
        • S(f);SBLOCK::S(G)
      • Refutation
        • S(f);XS(D)
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • B(h);N_GUARD::B(F)
        • S(a);OGATE::QAB(A)
        • S(f);SBLOCK::S(G)
      • Refutation
        • S(f);XS(D)
    • Try
      • Q(A);P_PINB(d)
      • Threat
        • DUALS(2)
      • Vars
        • S(f);::QAB1(A),XP(c)
      • Refutation
        • S(f);XS(D)
  • Actual
    • R(C);
    • Threat
      • B(F)
    • Vars
      • B(d);OGATEB,P_SPINB(d),XS(D)::QAR2(A)
      • S(f);OGATEB,P_SPINS(f),XS(D)::QAB(A)
      • P(c);OGATEB,XR(C)::QAB(A)
      • P(c);OGATEB::QAB(A)
      • B(h);N_GUARD::B(F)
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