MESON Chess Problem Database

Problem Display
PID: 124364 (1N2B3/Bb6/3b4/k2qRr2/2Q2n2/1K6/8/8 w - - 0 1)

Onitiu, Valerian

Revista Romana de Sah, 1937

1N2B3/Bb6/3b4/k2qRr2/2Q2n2/1K6/8/8

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qb5+
      • 2.Qxb5#
    • 1...Qc5
      • 2.Qc3#
      • 2.Qa4#
      • 2.Qb4#
    • 1...Qxe5
      • 2.Qa4#
    • 1...Ba6
      • 2.Sc6#
    • 1...Bc6
      • 2.Sxc6#
    • 1...Bc8
      • 2.Sc6#
  • Tries
    • 1.Rxd5+?
      • 1...Rxd5
        • 2.Qa4#
      • 1...Bc5
        • 2.Qb5#
        • 2.Qc3#
        • 2.Qa4#
        • 2.Qb4#
        • 2.Qxc5#
      • 1...Sxd5
        • 2.Qb5#
        • 2.Qa4#
      • 1...Bxd5!
  • Keys
    • 1.Kc2!
      • threat
        • 2.Qa4#
      • 1...Qb5
        • 2.Qxb5#
      • 1...Qc5
        • 2.Qc3#
      • 1...Bb4
        • 2.Qc7#
      • 1...Bc6
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(c);CHECK,N_PINQ(B)::QAR1(B),XQ(c)
    • Q(c);N_PINQ(B),N_SPINQ(c),XR(C)::QAR1(B)
    • B(f);N_GUARD::S(E)
    • B(f);N_GUARD::S(E),XB(f)
  • Tries
    • Try
      • R(C);CHECK,N_SPINQ(B),XQ(c)
      • Vars
        • R(d);XR(C)::QAR1(B)
      • Refutation
        • B(f);P_PINQ(B),XR(C)
  • Actual
    • K(A);N_SPINQ(B),S_FLIGHT
    • Threat
      • QAR1(B)
    • Vars
      • Q(c);N_GUARD::QAR1(B),XQ(c)
      • Q(c);P_PINQ(B),S_CUTB(e)::QAB(B)
      • B(e);N_GUARD,SBLOCK::QAB(B)
      • B(f);N_GUARD::S(E),XB(f)
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