MESON Chess Problem Database

Problem Display
PID: 214617 (b2N4/Q1B5/5p2/1p1k4/3r4/1N2b3/B3K3/8 w - - 0 1)

Sola, Pentti Olavi

Suomen Shakki, 1932

b2N4/Q1B5/5p2/1p1k4/3r4/1N2b3/B3K3/8

#2

6 + 6

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qc5#
    • 1...Rd1
      • 2.Sd2#
    • 1...Rd2+
      • 2.Sxd2#
    • 1...Re4
      • 2.Sd4#
    • 1...Bc1
      • 2.Qxd4#
    • 1...Bd2
      • 2.Qxd4#
    • 1...Bf4
      • 2.Qxd4#
    • 1...Bg5
      • 2.Qxd4#
    • 1...Bh6
      • 2.Qxd4#
  • Keys
    • 1.Qb6!
      • threat
        • 2.Qe6#
      • 1...Rd2+
        • 2.Sxd2#
      • 1...Kc4
        • 2.Qc5#
      • 1...Ke4
        • 2.Qe6#
      • 1...Re4
        • 2.Sd4#
      • 1...Bc6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • K(d);S_FLIGHT::QAR1(D)
    • R(b);N_GUARD::B(A)+S(C)
    • R(b);CHECK,N_GUARD::B(A)+S(C),XR(b)
    • R(b);SBLOCK::B(A)+S(C)
    • B(a);N_GUARD::QAR1(D),XR(b)
  • Actual
    • Q(D);
    • Threat
      • QAB1(D)
    • Vars
      • R(b);CHECK,N_GUARD::B(A)+S(C),XR(b)
      • K(d);S_FLIGHT::QAR1(D)
      • K(d);S_FLIGHT::QAR2(D)
      • R(b);SBLOCK::B(A)+S(C)
      • B(f);N_GUARD::QAB1(D),XB(f)
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