MESON Chess Problem Database

Problem Display
PID: 160804 (8/1K6/2R1P3/3k4/5Q2/8/1P6/4r3 w - - 0 1)

Andreev, Aleksandr Grigorevich

Bankovskaya gazeta, 1996

8/1K6/2R1P3/3k4/5Q2/8/1P6/4r3

#2

5 + 2

5454 Near Snap 2017
15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Qd6#
    • 1...Re5
      • 2.Qc4#
  • Tries
    • 1.Kb6?
      • threat
        • 2.Rd6#
      • 1...Re4
        • 2.Qd6#
      • 1...Re5
        • 2.Qc4#
      • 1...Rxe6!
    • 1.Qf5+?
      • 1...Re5
        • 2.Qd3#
      • 1...Kd4!
  • Keys
    • 1.b4!
      • threat
        • 2.Rd6#
      • 1...Rxe6
        • 2.Rc5#
      • 1...Re4
        • 2.Qd6#
      • 1...Re5
        • 2.Qc4#

Anticipated by 157320(1942), 17317(1946)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(a);SBLOCK::QAR1(B)
    • R(a);SBLOCK::QAB1(B)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Threat
        • R1(C)
      • Vars
        • R(a);SBLOCK::QAR1(B)
        • R(a);SBLOCK::QAB1(B)
      • Refutation
        • R(a);P_PINR(C),XP(D)
    • Try
      • Q(B);CHECK
      • Vars
        • R(a);P_SPINR(a),SBLOCK::QAR2(B)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • P(A);
    • Threat
      • R1(C)
    • Vars
      • R(a);SBLOCK,XP(D)::R1(C)
      • R(a);SBLOCK::QAR1(B)
      • R(a);SBLOCK::QAB1(B)
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