MESON Chess Problem Database

Problem Display
PID: 102939 (8/3rp1K1/4N3/2Q1p3/2B1k3/4P2P/4R2P/8 w - - 0 1)

Zimmermann, Stepan

Nove mody, 1894

8/3rp1K1/4N3/2Q1p3/2B1k3/4P2P/4R2P/8

#2

8 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Sg5#
    • 1...Kf5
      • 2.e4#
  • Tries
    • 1.Kg6?
      • threat
        • 2.Sg5#
      • 1...Kf3
        • 2.Sg5#
      • 1...Rd6!
    • 1.Bd3+?
      • 1...Kxd3
        • 2.Qc2#
      • 1...Kf3
        • 2.Sg5#
      • 1...Rxd3!
    • 1.Bd5+?
      • 1...Kd3
        • 2.Qc2#
        • 2.Qc4#
      • 1...Kf5
        • 2.Rf2#
        • 2.e4#
      • 1...Rxd5!
    • 1.Qd5+?
      • 1...Kf5
        • 2.Bd3#
        • 2.Rf2#
        • 2.Qf3#
        • 2.e4#
      • 1...Rxd5!
    • 1.Qxe5+?
      • 1...Kf3
        • 2.Sg5#
        • 2.Qf4#
        • 2.Qf5#
      • 1...Kxe5!
    • 1.Qc6+?
      • 1...Kf5
        • 2.Rf2#
        • 2.Qf3#
        • 2.e4#
      • 1...Rd5!
  • Keys
    • 1.Qc8!
      • 1...Kf3
        • 2.Sg5#
      • 1...Kf5
        • 2.e4#
      • 1...Rd1
        • 2.Sg5#
      • 1...Rd2
        • 2.Sg5#
      • 1...Rd3
        • 2.Sg5#
      • 1...Rd4
        • 2.Sg5#
      • 1...Rd5
        • 2.Sg5#
      • 1...Rd6
        • 2.Sg5#
      • 1...Ra7
        • 2.Sg5#
      • 1...Rb7
        • 2.Sg5#
      • 1...Rc7
        • 2.Sg5#
      • 1...Rd8
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::S(G)
    • K(a);OGATE,P_SPINP(b),S_FLIGHT::P(C)
  • Tries
    • Try
      • K(H);P-FLIGHT
      • Threat
        • S(G)
      • Vars
        • K(a);S_FLIGHT::S(G)
      • Refutation
        • R(c);P_PINS(G)
    • Try
      • B(E);CHECK
      • Vars
        • K(a);S_FLIGHT,XB(E)::QAB1(F)
        • K(a);S_FLIGHT::S(G)
      • Refutation
        • R(c);XB(E)
    • Try
      • B(E);CHECK
      • Refutation
        • R(c);XB(E)
    • Try
      • Q(F);CHECK
      • Refutation
        • R(c);XQ(F)
    • Try
      • Q(F);CHECK,XP(b)
      • Refutation
        • K(a);P-FLIGHT,XQ(F)
    • Try
      • Q(F);CHECK
      • Refutation
        • R(c);P_SPINR(c)
  • Actual
    • Q(F);
    • Vars
      • K(a);S_FLIGHT::S(G)
      • K(a);OGATE,S_FLIGHT::P(C)
      • R(c);::S(G)
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