MESON Chess Problem Database

Problem Display
PID: 63312 (8/5n2/Kp6/1Q6/5p1B/pPR2P2/r1P1BP1N/1N1bk2r w - - 0 1)

Chepizhni, Viktor Ivanovich

1st Prize, Kiev-1500 JT, 1982

8/5n2/Kp6/1Q6/5p1B/pPR2P2/r1P1BP1N/1N1bk2r

#2

11 + 8

3752 FIDE Album (1980-1982) 1988
23 Die Schwalbe 2005
6167 Viktor Chepizhny 2007

SOLUTION

  • SOUND
  • Tries
    • 1.Rd3?
      • threat
        • 2.Rxd1#
      • 1...Kxe2
        • 2.Re3#
      • 1...Bxe2
        • 2.Qb4#
      • 1...Bxc2!
    • 1.Re3?
      • threat
        • 2.Qb4#
      • 1...Bxe2
        • 2.Qxe2#
      • 1...fxe3
        • 2.fxe3#
      • 1...Rxc2!
    • 1.Qd3?
      • threat
        • 2.Qxd1#
        • 2.Qd2#
      • 1...Rxc2
        • 2.Qxd1#
      • 1...Bxc2
        • 2.Qd2#
      • 1...Bxe2!
    • 1.Qd5?
      • threat
        • 2.Qxd1#
        • 2.Qd2#
      • 1...Kxe2
        • 2.Qe4#
        • 2.Qd2#
      • 1...Rxc2
        • 2.Qxd1#
      • 1...Bxc2
        • 2.Qd2#
      • 1...Bxe2+!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Re3#
      • 1...Bxe2+
        • 2.Rd3#
      • 1...Kxe2
        • 2.Qe4#
      • 1...Rxc2
        • 2.Rxc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(G);
      • Threat
        • R1(G),XB(a)
      • Vars
        • K(b);OGATEB,P-FLIGHT,XB(C)::QAB(J)+R(G),DCHECK
        • B(a);SBLOCK,XB(C)::QAB(J)
      • Refutation
        • B(a);XP(B)
    • Try
      • R(G);
      • Threat
        • QAB(J)
      • Vars
        • B(a);OGATE,P_PINQ(J),P_SPINB(a),XB(C)::QAR1(J),XB(a)
        • P(f);OGATE,XR(G)::B(I)+P(D),XP(f)
      • Refutation
        • R(d);XP(B)
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • R(d);XP(B)::QAR1(J),XB(a)
        • B(a);XP(B)::QAB1(J)
      • Refutation
        • B(a);P_PINQ(J),XB(C)
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • R(d);XP(B)::QAR1(J),XB(a)
        • B(a);XP(B)::QAB1(J)
      • Refutation
        • B(a);CHECK,XB(C)
  • Actual
    • Q(J);
    • Threat
      • QAB(J)+R(G)
    • Vars
      • B(a);CHECK,SBLOCK,XB(C)::QAB(J)+R(G)
      • K(b);OGATEB,P-FLIGHT,XB(C)::QAR2(J)
      • R(d);OGATE,XP(B)::QAB(J)+R(G),XR(d)
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