MESON Chess Problem Database

Problem Display
PID: 273517 (2N2Q1n/1KpR2rr/6kp/7p/8/1p3p1N/1nq3b1/BB4R1 w - - 0 1)

Mendes de Moraes Filho, Feliciano

British Chess Magazine, 1934

2N2Q1n/1KpR2rr/6kp/7p/8/1p3p1N/1nq3b1/BB4R1

#2

8 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4+
      • 2.Bxe4#
    • 1...Qf5
      • 2.Bxf5#
      • 2.Qxf5#
    • 1...Sd1
      • 2.Qf6#
    • 1...Sd3
      • 2.Qf6#
    • 1...Sa4
      • 2.Qf6#
    • 1...Sc4
      • 2.Qf6#
    • 1...f2+
      • 2.Rxg2#
  • Tries
    • 1.Bxc2+?
      • 1...Sd3
        • 2.Bxd3#
        • 2.Qf6#
      • 1...bxc2!
  • Keys
    • 1.Qxf3!
      • threat
        • 2.Rxg2#
      • 1...Qe4+
        • 2.Bxe4#
      • 1...Qf5
        • 2.Qc6#
      • 1...Sd3
        • 2.Qe4#
      • 1...Sf7
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • Q(b);CHECK,OGATE::B(B),XQ(b)
    • S(a);::QAR1(H)
    • S(a);N_SPINQ(b)::QAR1(H)
    • P(e);CHECK,N_GUARD::R(C),XB(c)
  • Tries
    • Try
      • B(B);CHECK,XQ(b)
      • Refutation
        • P(d);XB(B)
  • Actual
    • Q(H);P_SPINQ(H),XP(e)
    • Threat
      • R(C),XB(c)
    • Vars
      • Q(b);CHECK,N_PINQ(H),OGATE::B(B),XQ(b)
      • Q(b);::QAR(H)
      • S(a);N_SPINQ(b),S_CUTQ(b)::QAB(H)
      • S(l);S_CUTR(j)::S(G)
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