MESON Chess Problem Database

Problem Display
PID: 165524 (8/8/8/1K2b3/8/k3r1B1/2P5/1Q6 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1996

8/8/8/1K2b3/8/k3r1B1/2P5/1Q6

#2

4 + 3

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Re1
      • 2.Qb3#
    • 1...Re2
      • 2.Qb3#
    • 1...Rb3+
      • 2.Qxb3#
    • 1...Rc3
      • 2.Qa1#
    • 1...Re4
      • 2.Qb3#
    • 1...Ba1
      • 2.Bd6#
      • 2.Qxa1#
    • 1...Bb2
      • 2.Bd6#
    • 1...Bc3
      • 2.Qb3#
    • 1...Bxg3
      • 2.Qa1#
    • 1...Bf4
      • 2.Qa1#
    • 1...Bd6
      • 2.Bxd6#
      • 2.Qa1#
    • 1...Bf6
      • 2.Bd6#
    • 1...Bc7
      • 2.Qa1#
    • 1...Bg7
      • 2.Bd6#
    • 1...Bb8
      • 2.Qa1#
    • 1...Bh8
      • 2.Bd6#
  • Tries
    • 1.Bxe5?
      • threat
        • 2.Bb2#
        • 2.Bd6#
        • 2.Qa1#
        • 2.Qb2#
      • 1...Rb3+
        • 2.Qxb3#
      • 1...Rd3
        • 2.Bb2#
        • 2.Qa1#
        • 2.Qb2#
      • 1...Re1
        • 2.Bb2#
        • 2.Bd6#
        • 2.Qb2#
        • 2.Qb3#
      • 1...Rc3
        • 2.Qa1#
      • 1...Re4
        • 2.Bb2#
        • 2.Qa1#
        • 2.Qb2#
        • 2.Qb3#
      • 1...Rxe5+!
  • Keys
    • 1.Be1!
      • threat
        • 2.Bb4#
      • 1...Rb3+
        • 2.Qxb3#
      • 1...Rxe1
        • 2.Qb3#
      • 1...Rc3
        • 2.Qa1#
      • 1...Re4
        • 2.Qb3#
      • 1...Bc3
        • 2.Qb3#
      • 1...Bd6
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • R(b);N_GUARD::QAR1(A)
    • R(b);CHECK,N_GUARD::QAR1(A),XR(b)
    • R(b);S_CUTB(c)::QAR2(A)
    • B(c);OGATE::B(C)
    • B(c);S_CUTR(b)::QAR1(A)
    • B(c);N_GUARD,XB(C)::QAR2(A)
    • B(c);N_GUARD::QAR2(A)
  • Tries
    • Try
      • B(C);XB(c)
      • Threat
        • DUALS(4)
      • Vars
        • R(b);CHECK,N_GUARD::QAR1(A),XR(b)
        • R(b);::QAR2(A)
      • Refutation
        • R(b);CHECK,XB(C)
  • Actual
    • B(C);
    • Threat
      • B(C)
    • Vars
      • R(b);CHECK,N_GUARD::QAR1(A),XR(b)
      • R(b);N_GUARD,XB(C)::QAR1(A)
      • R(b);S_CUTB(c)::QAR2(A)
      • R(b);N_GUARD::QAR1(A)
      • B(c);S_CUTR(b)::QAR1(A)
      • B(c);N_GUARD::QAR2(A)
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