MESON Chess Problem Database

Problem Display
PID: 109854 (3R4/1p6/r1p2pQK/pPPp4/4nRP1/1Ppk4/2Np4/3B3b w - - 0 1)

Belliboni, Caetano

O Estado de Sao Paulo, 1981

3R4/1p6/r1p2pQK/pPPp4/4nRP1/1Ppk4/2Np4/3B3b

#2

10 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bf3
      • 2.Rxf3#
    • 1...d4
      • 2.Rxd4#
    • 1...cxb5
      • 2.Rxd5#
  • Tries
    • 1.Rxe4?
      • threat
        • 2.Re3#
        • 2.Rd4#
      • 1...d4
        • 2.Re3#
        • 2.Rexd4#
        • 2.Rdxd4#
      • 1...Bxe4!
    • 1.bxc6?
      • threat
        • 2.Rxd5#
      • 1...d4
        • 2.Rxd4#
      • 1...bxc6!
  • Keys
    • 1.Qxf6!
      • threat
        • 2.Qd4#
      • 1...Sxf6
        • 2.Rd4#
      • 1...cxb5
        • 2.Rxd5#
      • 1...d4
        • 2.Rxd4#
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::R(D),XB(a)
    • P(g);OGATE::R1(J),XP(g)
    • P(i);N_GUARD,XP(F)::R(J),XP(g)
  • Tries
    • Try
      • R(D);XS(e)
      • Threat
        • DUALS(2)
      • Refutation
        • B(a);P_SPINB(a),XR(D)
    • Try
      • P(F);XP(i)
      • Threat
        • R(J),XP(g)
      • Vars
        • P(g);OGATE::R1(J),XP(g)
      • Refutation
        • P(k);XP(F)
  • Actual
    • Q(H);N_PINS(e),XP(j)
    • Threat
      • QAR1(H)
    • Vars
      • S(e);OGATE,XQ(H)::R1(D)
      • P(i);N_GUARD,P_PINQ(H),XP(F)::R(J),XP(g)
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