MESON Chess Problem Database

Problem Display
PID: 91433 (1N2K3/3P4/2PrPPP1/1Q1PkP1R/3R1N1B/2P1r3/8/8 w - - 0 1)

Nesic, Milivoj S

Probleemblad, 1964

1N2K3/3P4/2PrPPP1/1Q1PkP1R/3R1N1B/2P1r3/8/8

#2

15 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re1
      • 2.Sd3#
    • 1...Re2
      • 2.Sd3#
      • 2.Qxe2#
    • 1...Rd3
      • 2.Sxd3#
    • 1...Re4
      • 2.Sd3#
    • 1...Rxd5
      • 2.Qxd5#
    • 1...Rxc6
      • 2.dxc6#
    • 1...Rxe6+
      • 2.dxe6#
    • 1...Rxd7
      • 2.d6#
  • Tries
    • 1.Re4+?
      • 1...Rxe4
        • 2.Sd3#
      • 1...Kxe4!
  • Keys
    • 1.Qb4!
      • 1...Rxe6+
        • 2.fxe6#
      • 1...Rxc3
        • 2.Re4#
      • 1...Rxd5
        • 2.Rxd5#
      • 1...Rxc6
        • 2.Sxc6#
      • 1...Rxd7
        • 2.Sxd7#
      • 1...Re4
        • 2.Sd3#
        • 2.Rxe4#
      • 1...Rf3
        • 2.Re4#
      • 1...Re1
        • 2.Sd3#
      • 1...Re2
        • 2.Sd3#
      • 1...Rd3
        • 2.Sxd3#
        • 2.Re4#
      • 1...Rg3
        • 2.Re4#
      • 1...Rh3
        • 2.Re4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 4
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • R(a);N_GUARD::S(C)
    • R(a);N_GUARD::S(C),XR(a)
    • R(c);OGATE,P_SPINR(c),XP(F)::QAR1(E),XR(c)
    • R(c);OGATE,XP(I)::QAR(E)+P(F),XR(c)
    • R(c);CHECK,OGATE,XP(J)::QAR(E)+P(F),XR(c)
    • R(c);OGATE,XP(M)::QAR(E)+P(F)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • R(a);SBLOCK,XR(B)::S(C)
      • Refutation
        • K(b);P-FLIGHT,XR(B)
  • Actual
    • Q(E);
    • Vars
      • R(c);CHECK,OGATE,XP(J)::R(H)+P(G),XR(c)
      • R(a);N_GUARD,XP(A)::R1(B)
      • R(c);OGATE,XP(F)::R1(B),XR(c)
      • R(c);XP(I)::S(N),XR(c)
      • R(c);XP(M)::S(N),XR(c)
      • R(a);N_GUARD::R1(B)
      • R(a);N_GUARD::S(C)
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