MESON Chess Problem Database

Problem Display
PID: 183129 (8/8/K7/2RQ4/pk1p4/1b1pN3/pp6/8 w - - 0 1)

Brenander, Oskar Wilhelm

Tidskrift for Schack, 1907

8/8/K7/2RQ4/pk1p4/1b1pN3/pp6/8

#2

4 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Rc4+?
      • 1...Ka3
        • 2.Qc5#
        • 2.Qd6#
      • 1...Bxc4+!
    • 1.Rb5+?
      • 1...Ka3
        • 2.Qc5#
        • 2.Qd6#
      • 1...Kc3!
    • 1.Qb7+?
      • 1...Kxc5
        • 2.Qb6#
      • 1...Ka3!
  • Keys
    • 1.Rc3!
      • threat
        • 2.Qc5#
      • 1...Bc4+
        • 2.Qxc4#
      • 1...Ka3
        • 2.Qc5#
        • 2.Qd6#
      • 1...Kxc3
        • 2.Qa5#
      • 1...Bxd5
        • 2.Sxd5#
      • 1...dxc3
        • 2.Qd6#
      • 1...a3
        • 2.Qxb3#
        • 2.Qa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);CHECK
      • Refutation
        • B(c);CHECK,XR(B)
    • Try
      • R(B);CHECK
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(f);S_FLIGHT,XR(B)::QAB1(C)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • R(B);
    • Threat
      • QAB1(C)
    • Vars
      • B(c);CHECK,N_GUARD::QAR1(C),XB(c)
      • K(f);S_FLIGHT,XR(B)::QAB(C)
      • B(c);XQ(C)::S(A),XB(c)
      • P(g);SBLOCK,XR(B)::QAB(C)
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