MESON Chess Problem Database

Problem Display
PID: 32412 (2r5/NB3pQ1/PkP2B2/1N2n2R/1P4b1/3p1p2/7K/8 w - - 0 1)

Nietvelt, Gustaaf Josephus

De Problemist, 1928

2r5/NB3pQ1/PkP2B2/1N2n2R/1P4b1/3p1p2/7K/8

#2

10 + 7

23 Die Schwalbe 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Rd8
      • 2.Bxd8#
    • 1...Sc4
      • 2.Bd4#
    • 1...Sg6
      • 2.Bd4#
    • 1...Sd7
      • 2.Sxc8#
  • Tries
    • 1.Bxe5?
      • threat
        • 2.Bd4#
      • 1...Rd8
        • 2.Bc7#
      • 1...Rxc6!
    • 1.Be7?
      • threat
        • 2.Bc5#
      • 1...Sd7
        • 2.Sxc8#
      • 1...Rxc6!
    • 1.Bd8+?
      • 1...Rc7
        • 2.Bxc7#
      • 1...Rxd8!
    • 1.Qg5?
      • threat
        • 2.Qe3#
      • 1...Sxc6
        • 2.Qc5#
      • 1...Rd8
        • 2.Bxd8#
      • 1...Sc4
        • 2.Bd4#
        • 2.Qc5#
      • 1...Sd7
        • 2.Sxc8#
      • 1...Rxc6!
  • Keys
    • 1.Qh6!
      • threat
        • 2.Qe3#
      • 1...Rxc6
        • 2.Bd8#
      • 1...Sxc6
        • 2.Bd4#
      • 1...Rd8
        • 2.Bxd8#
      • 1...Sc4
        • 2.Bd4#
      • 1...Sd7
        • 2.Sxc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(g);N_GUARD::B(G),XR(g)
    • S(d);OGATE::B(G)
    • S(d);S_CUTB(c)::S(H),XR(g)
  • Tries
    • Try
      • B(G);XS(d)
      • Threat
        • B(G)
      • Vars
        • R(g);N_GUARD::B(G)
      • Refutation
        • R(g);XP(F)
    • Try
      • B(G);
      • Threat
        • B(G)
      • Vars
        • S(d);S_CUTB(c)::S(H),XR(g)
      • Refutation
        • R(g);XP(F)
    • Try
      • B(G);CHECK
      • Vars
        • R(g);N_GUARD,P_SPINR(g)::B(G),XR(g)
      • Refutation
        • R(g);XB(G)
    • Try
      • Q(J);
      • Threat
        • QAB(J)
      • Vars
        • S(d);OGATE,XP(F)::QAB1(J)
        • R(g);N_GUARD::B(G),XR(g)
        • S(d);S_CUTB(c)::S(H),XR(g)
      • Refutation
        • R(g);XP(F)
  • Actual
    • Q(J);
    • Threat
      • QAB(J)
    • Vars
      • R(g);N_GUARD,XP(F)::B(G)
      • S(d);OGATE,XP(F)::B(G)
      • R(g);N_GUARD::B(G),XR(g)
      • S(d);OGATE::B(G)
      • S(d);S_CUTB(c)::S(H),XR(g)
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