MESON Chess Problem Database

Problem Display
PID: 109884 (2K2N2/2pQBp1q/2B2pbN/b1p1kp2/r7/1nR3P1/2nrp3/3R4 w - - 0 1)

Mendes de Moraes Filho, Feliciano

Boletim da UBP, 1983

2K2N2/2pQBp1q/2B2pbN/b1p1kp2/r7/1nR3P1/2nrp3/3R4

#2

9 + 14

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Qxd5#
    • 1...Sb4
      • 2.Re3#
    • 1...Scd4
      • 2.Re3#
      • 2.Qd5#
    • 1...Sbd4
      • 2.Rxc5#
      • 2.Qd5#
    • 1...f4
      • 2.Sg4#
  • Tries
    • 1.Rxc5+?
      • 1...Rd5
        • 2.Qxd5#
      • 1...Sxc5!
    • 1.Qxf5+?
      • 1...Kd4
        • 2.Bxf6#
        • 2.Qxf6#
      • 1...Bxf5+!
    • 1.Qe6+?
      • 1...Kd4
        • 2.Bxf6#
        • 2.Qxf6#
      • 1...fxe6!
    • 1.Qxc7+?
      • 1...Kd4
        • 2.Bxf6#
      • 1...Rd6
        • 2.Bxd6#
        • 2.Qxd6#
      • 1...Bxc7!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Bxc5#
      • 1...Rd8+
        • 2.Bxd8#
      • 1...Kd4
        • 2.Bxf6#
      • 1...Rd6
        • 2.Bxd6#
      • 1...Rd7
        • 2.Bd6#
      • 1...Scd4
        • 2.Re3#
      • 1...Sbd4
        • 2.Rxc5#
      • 1...c4
        • 2.Bc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 3
  • Sets
    • R(b);N_GUARD::QAR1(F),XR(b)
    • S(a);N_GUARD,S_CUTR(e)::R(B)
    • P(i);N_GUARD,S_CUTR(e)::S(E)
  • Tries
    • Try
      • R(B);CHECK,XP(g)
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAR1(F),XR(b)
      • Refutation
        • S(d);XR(B)
    • Try
      • Q(F);CHECK,XP(i)
      • Refutation
        • B(k);CHECK,XQ(F)
    • Try
      • Q(F);CHECK
      • Refutation
        • P(m);XQ(F)
    • Try
      • Q(F);CHECK,XP(l)
      • Vars
        • K(h);P_SPINR(b),S_FLIGHT::B(G),XP(j)
      • Refutation
        • B(f);XQ(F)
  • Actual
    • Q(F);
    • Threat
      • QAR(F)+B(G),XP(g)
    • Vars
      • R(b);CHECK::QAR(F)+B(G),XR(b)
      • K(h);P_SPINR(b),S_FLIGHT::B(G),XP(j)
      • R(b);::QAR(F)+B(G),DCHECK,XR(b)
      • R(b);::QAR(F)+B(G),DCHECK
      • S(a);N_GUARD,SBLOCK,S_CUTR(e)::R(B)
      • S(d);N_GUARD,SBLOCK,S_CUTR(b)::R(B),XP(g)
      • P(g);::QAR(F)+B(G)
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