MESON Chess Problem Database

Problem Display
PID: 107682 (1N1b3N/2rB2R1/3p1k1P/3Pq3/2pBPp2/6p1/pQ3n2/K4R2 w - - 0 1)

Barbosa, Albernardes P

Source?, 2005

1N1b3N/2rB2R1/3p1k1P/3Pq3/2pBPp2/6p1/pQ3n2/K4R2

#2

11 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd4
      • 2.Qxd4#
    • 1...Rxd7
      • 2.Sxd7#
    • 1...Be7
      • 2.Rg6#
    • 1...Sd1
      • 2.Rxf4#
    • 1...Sh1
      • 2.Rxf4#
    • 1...Sxe4
      • 2.Rxf4#
    • 1...Sg4
      • 2.Rxf4#
  • Tries
    • 1.Rxf2?
      • threat
        • 2.Rxf4#
      • 1...Qxd4
        • 2.Qxd4#
      • 1...f3
        • 2.Rxf3#
      • 1...gxf2!
    • 1.Qxf2?
      • threat
        • 2.Qxf4#
      • 1...Qxd4+
        • 2.Qxd4#
      • 1...f3
        • 2.Qxf3#
      • 1...gxf2!
  • Keys
    • 1.Qb6!
      • threat
        • 2.Qxd6#
      • 1...Qxd4+
        • 2.Qxd4#
      • 1...Rxd7
        • 2.Sxd7#
      • 1...Sxe4
        • 2.Rxf4#
      • 1...Rc6
        • 2.Qxd8#
      • 1...Be7
        • 2.Rg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(f);OGATE,P_PINQ(C),XB(D)::QAB(C),XQ(f)
    • R(i);XB(H)::S(J),XR(i)
    • B(j);SBLOCK::R1(I)
    • S(b);OGATE,P_SPINP(e)::R(B),XP(e)
    • S(b);OGATE,P_SPINP(e),XP(E)::R(B),XP(e)
  • Tries
    • Try
      • R(B);P_PINP(e),XS(b)
      • Threat
        • R(B),XP(e)
      • Vars
        • Q(f);OGATE,P_PINQ(C),XB(D)::QAB(C),XQ(f)
        • P(e);OGATEB::R(B),XP(e)
      • Refutation
        • P(c);N_SPINP(e),XR(B)
    • Try
      • Q(C);P_PINP(e),P_SPINB(D),XS(b)
      • Threat
        • QAR2(C),XP(e)
      • Vars
        • Q(f);CHECK,N_SPINQ(f),OGATE,XB(D)::QAB(C),XQ(f)
        • P(e);OGATEB::QAR(C),XP(e)
      • Refutation
        • P(c);N_SPINP(e),XQ(C)
  • Actual
    • Q(C);P_PINP(g),P_SPINB(D)
    • Threat
      • QAR2(C),XP(g)
    • Vars
      • Q(f);CHECK,N_SPINQ(f),OGATE,XB(D)::QAB(C),XQ(f)
      • R(i);XB(H)::S(J),XR(i)
      • S(b);N_SPINP(g),P_SPINP(e),XP(E)::R(B),XP(e)
      • R(i);N_SPINP(g),OGATE::QAB(C),XB(j)
      • B(j);SBLOCK::R1(I)
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