MESON Chess Problem Database

Problem Display
PID: 265572 (4N3/8/1npp4/1R3Q1K/2kNpb2/1pPn4/3PP3/2R5 w - - 0 1)

Gevers, Raymond

Probleemblad, 1950

4N3/8/1npp4/1R3Q1K/2kNpb2/1pPn4/3PP3/2R5

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd2
      • 2.Sxd6#
    • 1...Be3
      • 2.Sxd6#
    • 1...Bg5
      • 2.Sxd6#
    • 1...Bh6
      • 2.Sxd6#
    • 1...Sxc1
      • 2.Rb4#
    • 1...Se1
      • 2.Rb4#
    • 1...Sb2
      • 2.Rb4#
    • 1...Sf2
      • 2.Rb4#
    • 1...Sb4
      • 2.Rxb4#
    • 1...Sc5
      • 2.Rb4#
    • 1...Se5
      • 2.Sxd6#
    • 1...e3
      • 2.Qxd3#
      • 2.exd3#
    • 1...cxb5
      • 2.Qxb5#
  • Tries
    • 1.exd3+?
      • 1...exd3
        • 2.Rb4#
      • 1...Kxd3!
  • Keys
    • 1.Qxe4!
      • threat
        • 2.Qxd3#
        • 2.exd3#
      • 1...Sxc1
        • 2.Qxc6#
      • 1...cxb5
        • 2.Se6#
      • 1...Se1
        • 2.Qxc6#
      • 1...Sb2
        • 2.Qxc6#
      • 1...Sf2
        • 2.Qxc6#
      • 1...Sb4
        • 2.cxb4#
      • 1...Sc5
        • 2.Rb4#
      • 1...Se5
        • 2.Sxd6#
      • 1...c5
        • 2.exd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 6
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • B(e);N_GUARD,XP(B)::S(I),XP(h)
    • B(e);N_GUARD::S(I),XP(h)
    • S(b);N_GUARD,XR(A)::R1(F)
    • S(b);N_GUARD::R1(F)
    • S(b);N_GUARD::R1(F),XS(b)
    • S(b);S_CUTB(e)::S(I),XP(h)
    • P(g);OGATE,XR(F)::QAB1(G),XP(g)
  • Tries
    • Try
      • P(C);CHECK,XS(b)
      • Vars
        • P(d);XP(C)::R1(F)
      • Refutation
        • K(c);P_SPINP(d),S_FLIGHT,XP(C)
  • Actual
    • Q(G);XP(d)
    • Threat
      • DUALS(2)
    • Vars
      • S(b);N_GUARD,XR(A)::QAR2(G),XP(g)
      • P(g);SBLOCK,XR(F)::QAR(G)+S(E)
      • S(b);N_GUARD::QAR2(G),XP(g)
      • S(b);OGATE::R(A)+P(D),XS(b)
      • S(b);N_GUARD,SBLOCK::R1(F)
      • S(b);S_CUTB(e)::S(I),XP(h)
      • P(g);::P(C),XS(b)
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