MESON Chess Problem Database

Problem Display
PID: 172208 (7B/8/8/8/1K6/3RQ3/k7/2b5 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1996

7B/8/8/8/1K6/3RQ3/k7/2b5

#2

4 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Ra3+?
      • 1...Kb1
        • 2.Qd3#
        • 2.Qe4#
      • 1...Bxa3+!
    • 1.Qe4?
      • 1...Bd2+
        • 2.Rxd2#
      • 1...Ba3+
        • 2.Rxa3#
      • 1...Kb1
        • 2.Rd2#
        • 2.Ra3#
      • 1...Be3
        • 2.Ra3#
      • 1...Bf4
        • 2.Ra3#
      • 1...Bg5
        • 2.Ra3#
      • 1...Bh6
        • 2.Ra3#
      • 1...Bb2!
  • Keys
    • 1.Rd1!
      • threat
        • 2.Qb3#
      • 1...Bd2+
        • 2.Qxd2#
      • 1...Ba3+
        • 2.Qxa3#
      • 1...Kb1
        • 2.Qb3#
      • 1...Bxe3
        • 2.Ra1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);CHECK
      • Refutation
        • B(a);CHECK,XR(A)
    • Try
      • Q(B);
      • Vars
        • B(a);CHECK,N_GUARD::R(A),XB(a)
        • B(a);CHECK,N_GUARD::R1(A),XB(a)
        • B(a);N_GUARD::R1(A)
      • Refutation
        • B(a);
  • Actual
    • R(A);
    • Threat
      • QAB1(B)
    • Vars
      • B(a);CHECK,N_GUARD::QAR(B),XB(a)
      • B(a);CHECK,N_GUARD::QAR1(B),XB(a)
      • K(b);P_SPINB(a),S_FLIGHT::QAR2(B)
      • B(a);OGATE,XQ(B)::R1(A)
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