MESON Chess Problem Database

Problem Display
PID: 133406 (4Bb2/2r1Qn2/2pn1N2/7K/2k1p3/1R2P3/pR6/B3N3 w - - 0 1)

Papic, Ljubisa

Stojnic, Dragan

The Problemist, 2009

4Bb2/2r1Qn2/2pn1N2/7K/2k1p3/1R2P3/pR6/B3N3

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Rc2#
      • 2.Rc3#
    • 1...Sb5
      • 2.Bxf7#
    • 1...Sf5
      • 2.Bxf7#
    • 1...Sb7
      • 2.Bxf7#
    • 1...Sc8
      • 2.Bxf7#
    • 1...c5
      • 2.Qe6#
  • Tries
    • 1.Bxf7+?
      • 1...Kc5
        • 2.Sxe4#
        • 2.Rc2#
        • 2.Rc3#
        • 2.Qe5#
      • 1...Sxf7!
    • 1.Rb6?
      • threat
        • 2.Rc2#
      • 1...Kc3
        • 2.Rc2#
      • 1...Sb5
        • 2.Rb4#
      • 1...Kc5!
    • 1.Rb7?
      • threat
        • 2.Rc2#
      • 1...Kc3
        • 2.Rc2#
      • 1...Kc5
        • 2.Rc2#
      • 1...Sxb7
        • 2.Rb4#
      • 1...Sb5
        • 2.Rb4#
      • 1...Rxb7!
    • 1.Rb8?
      • threat
        • 2.Rc2#
      • 1...Kc3
        • 2.Rc2#
      • 1...Kc5
        • 2.Rc2#
      • 1...Sb5
        • 2.Rb4#
      • 1...Sb7
        • 2.Rb4#
      • 1...Rb7!
    • 1.Qxe4+?
      • 1...Kc5
        • 2.Sd3#
        • 2.Qb4#
        • 2.Qd4#
      • 1...Sxe4!
  • Keys
    • 1.Rb5!
      • threat
        • 2.R2b4#
      • 1...Kc3
        • 2.Rc2#
      • 1...cxb5
        • 2.Qxc7#
      • 1...c5
        • 2.Rc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • S(e);N_GUARD::B(I),XS(g)
    • P(d);SBLOCK::QAB(H)
  • Tries
    • Try
      • B(I);CHECK,XS(g)
      • Refutation
        • S(e);XB(I)
    • Try
      • R(D);
      • Threat
        • R(C)
      • Vars
        • K(b);P-FLIGHT::B(A)+R(C),DCHECK
        • S(e);::R1(C)
      • Refutation
        • K(b);P-FLIGHT,P_SPINS(e)
    • Try
      • R(D);
      • Threat
        • R(C)
      • Vars
        • K(b);P-FLIGHT::B(A)+R(C),DCHECK
        • K(b);P-FLIGHT,P_SPINS(e)::R(C)
        • S(e);XR(D)::R1(C)
        • S(e);::R1(C)
      • Refutation
        • R(f);XR(D)
    • Try
      • R(D);
      • Threat
        • R(C)
      • Vars
        • K(b);P-FLIGHT::B(A)+R(C),DCHECK
        • K(b);P-FLIGHT,P_SPINS(e)::R(C)
        • S(e);::R1(C)
      • Refutation
        • R(f);
    • Try
      • Q(H);CHECK,XP(c)
      • Refutation
        • S(e);XQ(H)
  • Actual
    • R(D);
    • Threat
      • R1(C)
    • Vars
      • K(b);P-FLIGHT::B(A)+R(C),DCHECK
      • P(d);OGATEB,XR(D)::QAR(H),XR(f)
      • P(d);::R(C)
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