MESON Chess Problem Database

Problem Display
PID: 109853 (3Q2Kn/r1p5/2BNp3/1Rppk1p1/1P1N2p1/b1P3P1/8/8 w - - 0 1)

Belliboni, Caetano

O Estado de Sao Paulo, 1981

3Q2Kn/r1p5/2BNp3/1Rppk1p1/1P1N2p1/b1P3P1/8/8

#2

9 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sc4+?
      • 1...dxc4
        • 2.Rxc5#
      • 1...Ke4!
    • 1.Qf6+?
      • 1...Kxd6
        • 2.Qxe6#
      • 1...Kxf6!
    • 1.Qe7?
      • threat
        • 2.Qxe6#
      • 1...cxd4
        • 2.Rxd5#
      • 1...Ra8+!
  • Keys
    • 1.Bxd5!
      • threat
        • 2.Sc4#
      • 1...Kxd5
        • 2.Rxc5#
      • 1...cxd4
        • 2.Bc6#
      • 1...exd5
        • 2.Qe7#
      • 1...cxd6
        • 2.Qxg5#
      • 1...c4
        • 2.Sc6#
        • 2.Sxc4#
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • P(d);P_SPINP(c),XS(G)::R(E),XP(c)
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(d)
    • Try
      • Q(H);CHECK
      • Vars
        • K(e);P_SPINP(g),S_FLIGHT,XS(G)::QAR1(H),XP(g)
      • Refutation
        • K(e);S_FLIGHT,XQ(H)
    • Try
      • Q(H);P_PINP(g)
      • Threat
        • QAR1(H),XP(g)
      • Vars
        • P(c);N_SPINP(g),OGATE,P_SPINP(d),XS(D)::R1(E),XP(d)
      • Refutation
        • R(h);CHECK
  • Actual
    • B(F);XP(d)
    • Threat
      • S(G)
    • Vars
      • K(e);OGATEB,P-FLIGHT,P_SPINP(c),XB(F)::R1(E),XP(c)
      • P(c);OGATEB,XS(D)::R(E)+B(F)
      • P(g);OGATEB,SBLOCK,XB(F)::QAR2(H)
      • P(i);SBLOCK,XS(G)::QAR2(H),XP(f)
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