MESON Chess Problem Database

Problem Display
PID: 172303 (8/7P/8/8/5Q2/8/R2n2K1/3kb3 w - - 0 1)

Andreev, Aleksandr Grigorevich

Vecherni Krasnodar, 1996

8/7P/8/8/5Q2/8/R2n2K1/3kb3

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ke2
      • 2.Qf3#
    • 1...Bf2
      • 2.Qxd2#
    • 1...Bg3
      • 2.Qxd2#
    • 1...Bh4
      • 2.Qxd2#
  • Tries
    • 1.Qf2?
      • 1...Kc1
        • 2.Qxe1#
      • 1...Sb1
        • 2.Qc2#
      • 1...Sf1
        • 2.Ra1#
        • 2.Qc2#
      • 1...Sb3
        • 2.Qc2#
      • 1...Sf3
        • 2.Ra1#
        • 2.Qc2#
      • 1...Sc4
        • 2.Ra1#
        • 2.Qc2#
      • 1...Se4
        • 2.Ra1#
        • 2.Qc2#
      • 1...Bxf2!
  • Keys
    • 1.h8Q!
      • 1...Kc1
        • 2.Qa1#
      • 1...Ke2
        • 2.Qf3#
      • 1...Bf2
        • 2.Qxd2#
      • 1...Bg3
        • 2.Qxd2#
      • 1...Bh4
        • 2.Qxd2#
      • 1...Sb1
        • 2.Qh5#
      • 1...Sf1
        • 2.Qa1#
        • 2.Qh5#
      • 1...Sb3
        • 2.Qh5#
      • 1...Sf3
        • 2.Qa1#
      • 1...Sc4
        • 2.Qa1#
        • 2.Qh5#
      • 1...Se4
        • 2.Qa1#
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);P_SPINS(c),S_FLIGHT::QAB1(C)
    • B(b);N_GUARD::QAR1(C),XS(c)
  • Tries
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT::QAR2(C),XB(b)
        • S(c);OGATE::QAB1(C)
      • Refutation
        • B(b);XQ(C)
  • Actual
    • P(D);
    • Vars
      • K(a);P-FLIGHT,P_SPINS(c)::QAR2(D)
      • K(a);P_SPINS(c),S_FLIGHT::QAB1(C)
      • B(b);N_GUARD::QAR1(C),XS(c)
      • S(c);N_GUARD::QAB(D)
      • S(c);N_GUARD::QAR(D)
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