MESON Chess Problem Database

Problem Display
PID: 198352 (1r1NN2K/7p/1b5r/n1kP1R2/1nB4Q/3p4/1P6/8 w - - 0 1)

Rietveld, Johannes Jacob

De Maasbode, 1920

1r1NN2K/7p/1b5r/n1kP1R2/1nB4Q/3p4/1P6/8

#2

8 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rh5
      • 2.Se6#
    • 1...Re6
      • 2.Sxe6#
  • Tries
    • 1.Bxd3?
      • threat
        • 2.Qf2#
      • 1...Rxh4
        • 2.Se6#
      • 1...Sxd5
        • 2.b4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Re6
        • 2.Sxe6#
      • 1...Sa2
        • 2.d6#
      • 1...Sc2
        • 2.d6#
      • 1...Sa6
        • 2.d6#
      • 1...Sbc6
        • 2.dxc6#
      • 1...Sb3
        • 2.Qc4#
      • 1...Sac6
        • 2.Qc4#
      • 1...Sxd3!
  • Keys
    • 1.Ba6!
      • threat
        • 2.Qf2#
      • 1...Rxh4
        • 2.Se6#
      • 1...Sxd5
        • 2.b4#
      • 1...Sxa6
        • 2.d6#
      • 1...Re6
        • 2.Sxe6#
      • 1...Sa2
        • 2.d6#
      • 1...Sc2
        • 2.d6#
      • 1...Sbc6
        • 2.dxc6#
      • 1...Sb3
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sac6
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • R(f);N_GUARD::S(F)
    • R(f);N_GUARD::S(F),XR(f)
  • Tries
    • Try
      • B(B);XP(a)
      • Threat
        • QAB(C)
      • Vars
        • R(f);N_GUARD,XQ(C)::S(F)
        • S(b);OGATE,P_SPINS(b),XP(D)::P(A)
        • S(c);N_GUARD::QAR1(C),XS(c)
        • R(f);N_GUARD::S(F),XR(f)
        • S(b);N_GUARD::R(E)+P(D)
        • S(b);OGATE::R(E)+P(D),XS(b)
        • S(c);N_GUARD::QAR1(C)
      • Refutation
        • S(b);XB(B)
  • Actual
    • B(B);
    • Threat
      • QAB(C)
    • Vars
      • R(f);N_GUARD,XQ(C)::S(F)
      • S(b);OGATE,P_SPINS(b),XP(D)::P(A)
      • S(b);N_GUARD,XB(B)::R(E)+P(D)
      • R(f);N_GUARD::S(F),XR(f)
      • S(b);N_GUARD::R(E)+P(D)
      • S(b);OGATE::R(E)+P(D),XS(b)
      • S(c);N_GUARD::QAR1(C)
      • S(c);N_GUARD::QAR1(C),XS(c)
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