MESON Chess Problem Database

Problem Display
PID: 172441 (2B5/6K1/8/7p/6nk/8/5R2/5Q2 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1997

2B5/6K1/8/7p/6nk/8/5R2/5Q2

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Rh2+?
      • 1...Kg3
        • 2.Rh3#
      • 1...Kg5
        • 2.Qf5#
      • 1...Sxh2!
    • 1.Qh3+?
      • 1...Kg5
        • 2.Rf5#
      • 1...Kxh3!
    • 1.Qh1+?
      • 1...Kg3
        • 2.Rf3#
      • 1...Kg5
        • 2.Rf5#
      • 1...Sh2!
  • Keys
    • 1.Rg2!
      • 1...Kh3
        • 2.Qh1#
      • 1...Kg5
        • 2.Qf6#
      • 1...Sf2
        • 2.Qxf2#
      • 1...Sh2
        • 2.Qe1#
        • 2.Qf2#
        • 2.Qf6#
      • 1...Se3
        • 2.Qe1#
        • 2.Qh1#
        • 2.Qf2#
        • 2.Qf6#
      • 1...Se5
        • 2.Qe1#
        • 2.Qh1#
        • 2.Qf2#
        • 2.Qf6#
      • 1...Sf6
        • 2.Qe1#
        • 2.Qh1#
        • 2.Qf2#
        • 2.Qxf6#
      • 1...Sh6
        • 2.Qe1#
        • 2.Qh1#
        • 2.Qf2#
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(b);S_FLIGHT::R1(B)
        • K(b);S_FLIGHT::QAR1(A)
      • Refutation
        • S(a);XR(B)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::R1(B)
      • Refutation
        • K(b);P-FLIGHT,P_SPINS(a),XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::R1(B)
      • Refutation
        • S(a);P_SPINS(a)
  • Actual
    • R(B);
    • Vars
      • K(b);P-FLIGHT,P_SPINS(a)::QAR2(A)
      • K(b);P_SPINS(a),S_FLIGHT::QAB1(A)
      • S(a);N_GUARD::QAB(A),XS(a)
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