MESON Chess Problem Database

Problem Display
PID: 230902 (8/8/1n1k4/1b6/4Q2B/8/8/2R4K w - - 0 1)

Asov, Aleksei

Kudesnik, 2006

8/8/1n1k4/1b6/4Q2B/8/8/2R4K

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd7
      • 2.Qe7#
    • 1...Bd7
      • 2.Bg3#
      • 2.Be7#
    • 1...Sd7
      • 2.Be7#
  • Tries
    • 1.Rc6+?
      • 1...Kd7
        • 2.Qe6#
      • 1...Bxc6!
    • 1.Qe5+?
      • 1...Kd7
        • 2.Rc7#
        • 2.Qe7#
      • 1...Kxe5!
  • Keys
    • 1.Rc5!
      • threat
        • 2.Qe7#
      • 1...Kxc5
        • 2.Be7#
      • 1...Kd7
        • 2.Qe7#
      • 1...Bc6
        • 2.Qxc6#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sc8
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(c);P-FLIGHT::QAR1(C)
    • S(b);SBLOCK::B(D)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(C)
      • Refutation
        • B(a);P_PINQ(C),XR(A)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(c);S_FLIGHT,XQ(C)
  • Actual
    • R(A);
    • Threat
      • QAB1(C)
    • Vars
      • K(c);S_FLIGHT,XR(A)::B(D)
      • K(c);P-FLIGHT::QAR1(C)
      • B(a);N_GUARD,P_PINQ(C)::QAR1(C),XB(a)
      • S(b);N_GUARD::QAR1(C),XS(b)
      • S(b);N_GUARD::QAR1(C)
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