MESON Chess Problem Database

Problem Display
PID: 98513 (8/2rp4/R1bppP2/2Bk2NR/2p2p2/2P4P/3rpQ2/1B2n2K w - - 0 1)

Petkov, Petko Andonov

Problemas, 1975

8/2rp4/R1bppP2/2Bk2NR/2p2p2/2P4P/3rpQ2/1B2n2K

#2

10 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5+
      • 2.Se4#
    • 1...Ra2
      • 2.Qd4#
    • 1...Rb2
      • 2.Qd4#
    • 1...Rc2
      • 2.Qd4#
    • 1...Rd4
      • 2.Qxd4#
    • 1...Sd3
      • 2.Qd4#
    • 1...e5
      • 2.Be4#
  • Tries
    • 1.Qf3+?
      • 1...Kxc5
        • 2.Se4#
        • 2.Sxe6#
      • 1...Ke5
        • 2.Se4#
        • 2.Sh7#
      • 1...Sxf3!
    • 1.Qxf4?
      • threat
        • 2.Qxd6#
      • 1...Kxc5+
        • 2.Se4#
      • 1...dxc5
        • 2.Be4#
      • 1...e5!
  • Keys
    • 1.Bxd6!
      • threat
        • 2.Qc5#
      • 1...Kxd6+
        • 2.Se4#
      • 1...Rd4
        • 2.Qxd4#
      • 1...Ba4
        • 2.Be4#
      • 1...Bb5
        • 2.Be4#
      • 1...Bb7
        • 2.Be4#
      • 1...Ba8
        • 2.Be4#
      • 1...Sd3
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • K(f);CHECK,P-FLIGHT::R(H)+S(G)
    • R(b);N_GUARD::QAR1(C)
    • R(b);N_GUARD::QAR1(C),XR(b)
    • S(a);S_CUTR(b)::QAR1(C)
    • P(i);SBLOCK::B(A)
  • Tries
    • Try
      • Q(C);CHECK
      • Refutation
        • S(a);XQ(C)
    • Try
      • Q(C);XP(e)
      • Threat
        • QAR1(C),XP(h)
      • Vars
        • K(f);CHECK,P-FLIGHT,XB(F)::R(H)+S(G),DCHECK
        • P(h);SBLOCK,XB(F)::B(A)
      • Refutation
        • P(i);
  • Actual
    • B(F);XP(h)
    • Threat
      • QAR1(C)
    • Vars
      • K(f);CHECK,P-FLIGHT,P_SPINB(g),XB(F)::S(G)
      • R(b);N_GUARD::QAR1(C),XR(b)
      • B(g);::B(A)
      • S(a);S_CUTR(b)::QAR1(C)
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