MESON Chess Problem Database

Problem Display
PID: 179538 (3R4/8/1p2K2b/1p2p3/1Rp1k3/1N6/bP3Q2/8 w - - 0 1)

Flant, G

diagrammes, 1974

3R4/8/1p2K2b/1p2p3/1Rp1k3/1N6/bP3Q2/8

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bd2
      • 2.Sxd2#
    • 1...Be3
      • 2.Qf5#
    • 1...Bg7
      • 2.Sd2#
    • 1...Bf8
      • 2.Sd2#
  • Tries
    • 1.Rxb5?
      • threat
        • 2.Rxe5#
      • 1...Bg7
        • 2.Sd2#
      • 1...Bf4!
    • 1.Rd3?
      • threat
        • 2.Qf3#
        • 2.Qf5#
      • 1...Be3
        • 2.Rxe3#
        • 2.Qxe3#
        • 2.Qf5#
      • 1...Bf4
        • 2.Qf3#
      • 1...Kxd3!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qf3#
      • 1...c3+
        • 2.Sb3#
      • 1...Kd3
        • 2.Qe2#
      • 1...exd4
        • 2.Rxd4#
      • 1...Be3
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(g);N_GUARD::S(C),XB(g)
    • B(g);SBLOCK::QAB1(B)
    • B(g);N_GUARD::S(C)
  • Tries
    • Try
      • R(D);N_PINP(b),XP(d)
      • Threat
        • R1(D),XP(e)
      • Vars
        • B(g);N_GUARD::S(C)
      • Refutation
        • B(g);
    • Try
      • R(F);
      • Threat
        • DUALS(2)
      • Vars
        • B(g);::QAB1(B)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT,XR(F)
  • Actual
    • S(C);N_PINP(b)
    • Threat
      • QAB1(B)
    • Vars
      • P(b);CHECK::R(D)+S(C)
      • K(c);S_FLIGHT::QAB1(B)
      • P(e);OGATE,XS(C)::R1(F),XP(e)
      • B(g);SBLOCK::QAB1(B)
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