MESON Chess Problem Database

Problem Display
PID: 40493 (K5B1/BP1p2Q1/1P1p1N2/p2n1R2/r2k3r/8/NPP2P2/n3R3 w - - 0 1)

Petrovic, Nenad

4th Prize, Sahovski Vestnik, 1949

K5B1/BP1p2Q1/1P1p1N2/p2n1R2/r2k3r/8/NPP2P2/n3R3

#2

13 + 8

3105 FIDE Album (1945-1955) 1964

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Rxd5#
    • 1...Sc3
      • 2.Se4#
      • 2.Sg4#
      • 2.Sh5#
      • 2.Sxd7#
      • 2.Sh7#
      • 2.Se8#
      • 2.bxc3#
    • 1...Se3
      • 2.fxe3#
    • 1...Sb4
      • 2.Se4#
      • 2.Sg4#
      • 2.Sh5#
      • 2.Sxd7#
      • 2.Sh7#
      • 2.Se8#
    • 1...Sf4
      • 2.Se4#
      • 2.Sg4#
      • 2.Sh5#
      • 2.Sxd7#
      • 2.Sh7#
      • 2.Se8#
      • 2.Re4#
    • 1...Sxb6+
      • 2.Bxb6#
    • 1...Sxf6
      • 2.Qxf6#
    • 1...Sc7+
      • 2.bxc7#
    • 1...Se7
      • 2.Se4#
      • 2.Sg4#
      • 2.Sh5#
      • 2.Sxd7#
      • 2.Sh7#
      • 2.Se8#
      • 2.Rd1#
  • Tries
    • 1.Se4+?
      • 1...Sf6
        • 2.Qxf6#
      • 1...Kc4!
    • 1.Sxd5+?
      • 1...Kc4
        • 2.Se3#
      • 1...Kc5!
    • 1.Sxd7+?
      • 1...Sf6
        • 2.Qxf6#
      • 1...Kc4!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qxd5#
      • 1...Sxb6+
        • 2.Bxb6#
      • 1...Sc7+
        • 2.bxc7#
      • 1...Kc4
        • 2.Qxd5#
      • 1...Kc5
        • 2.Qxd5#
      • 1...Sxf6
        • 2.Qxf6#
      • 1...Sc3
        • 2.bxc3#
      • 1...Se3
        • 2.fxe3#
      • 1...Sb4
        • 2.Qc4#
      • 1...Sf4
        • 2.Re4#
      • 1...Se7
        • 2.Rd1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(b);SBLOCK::R1(F),XS(f)
    • S(f);OGATE::P(E),XS(f)
    • S(f);CHECK,OGATE,P_SPINS(f),XP(G)::B(I),XS(f)
    • S(f);OGATE,P_SPINS(f),XS(H)::QAB(K),XS(f)
    • S(f);CHECK,OGATE::B(I)+P(G),XS(f)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::QAB(K),XS(f)
      • Refutation
        • K(c);P-FLIGHT,P_SPINS(f)
    • Try
      • S(H);CHECK,XS(f)
      • Vars
        • K(c);P-FLIGHT::B(M)+S(H),DCHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(H);CHECK,XP(h)
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::QAB(K),XS(f)
      • Refutation
        • K(c);P-FLIGHT,P_SPINS(f)
  • Actual
    • Q(K);
    • Threat
      • QAR1(K),XS(f)
    • Vars
      • S(f);CHECK,OGATE,P_SPINS(f),XP(G)::B(I),XS(f)
      • S(f);CHECK,OGATE::B(I)+P(G),XS(f)
      • K(c);P-FLIGHT,P_SPINS(f)::QAB1(K),XS(f)
      • K(c);P_SPINS(f),S_FLIGHT::QAR1(K),XS(f)
      • S(f);OGATE,XS(H)::QAB(K),XS(f)
      • S(f);OGATE::P(C),XS(f)
      • S(f);OGATE::P(E),XS(f)
      • S(f);OGATE::QAR1(K)
      • S(f);S_CUTR(d)::R1(A)
      • S(f);::R(A)
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