MESON Chess Problem Database

Problem Display
PID: 88838 (qr6/b2QPp2/1P3PPN/1PP4N/1KpPk3/2pr4/4BP2/8 w - - 0 1)

Marandiuk, Mikhail Nazarovich

Buletin Problemistic, 1998-1999

qr6/b2QPp2/1P3PPN/1PP4N/1KpPk3/2pr4/4BP2/8

#2

13 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Qg4#
    • 1...Rxd4
      • 2.Qf5#
  • Tries
    • 1.Kxc4?
      • threat
        • 2.Qg4#
        • 2.Qf5#
      • 1...Qd5+
        • 2.Qxd5#
      • 1...Rxd4+
        • 2.Qxd4#
      • 1...fxg6
        • 2.Qg4#
        • 2.Qe6#
      • 1...Rg3
        • 2.Qf5#
      • 1...Rf3!
    • 1.Sg3+?
      • 1...Kf4
        • 2.Qg4#
        • 2.Qf5#
      • 1...Rxg3!
    • 1.Sxf7?
      • threat
        • 2.Sg5#
      • 1...Rxd4
        • 2.Qe6#
      • 1...Qd5
        • 2.Qg4#
      • 1...Rg3!
    • 1.Qe6+?
      • 1...Kxd4
        • 2.Sf5#
      • 1...fxe6!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qe5#
      • 1...Rxd4
        • 2.Sg3#
      • 1...Qd5
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • Q(g);SBLOCK::QAR2(L)
    • R(b);SBLOCK,XP(D)::QAB1(L)
  • Tries
    • Try
      • K(C);P-FLIGHT,XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);CHECK,N_GUARD::QAB1(L),XQ(g)
        • R(b);CHECK,OGATE,XP(D)::QAR1(L),XR(b)
        • R(b);::QAB1(L)
      • Refutation
        • R(b);
    • Try
      • S(G);CHECK
      • Refutation
        • R(b);XS(G)
    • Try
      • S(K);XP(f)
      • Threat
        • S(K)
      • Vars
        • R(b);SBLOCK,XP(D)::QAR2(L)
        • Q(g);SBLOCK::QAR2(L)
      • Refutation
        • R(b);
    • Try
      • Q(L);CHECK
      • Vars
        • K(d);P-FLIGHT,XP(D)::S(K)
      • Refutation
        • P(f);XQ(L)
  • Actual
    • Q(L);
    • Threat
      • QAR1(L)
    • Vars
      • R(b);N_GUARD,XP(D)::S(G)
      • Q(g);SBLOCK::QAR1(L)
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