MESON Chess Problem Database

Problem Display
PID: 259202 (8/4Q3/K1N5/1R1P4/2kP4/pR1n4/2p5/2q1nN2 w - - 0 1)

Udartsev, Valentin Filipovich

Skakbladet, 1981

8/4Q3/K1N5/1R1P4/2kP4/pR1n4/2p5/2q1nN2

#2

8 + 6

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.Sd2#
      • 2.Se3#
    • 1...Qd2
      • 2.Sxd2#
    • 1...Qe3
      • 2.Sxe3#
    • 1...Qa1
      • 2.Sd2#
      • 2.Se3#
    • 1...Qb1
      • 2.Sd2#
      • 2.Se3#
    • 1...Qd1
      • 2.Se3#
    • 1...Sb2
      • 2.Qb4#
      • 2.Qc5#
    • 1...Sf2
      • 2.Qb4#
      • 2.Qc5#
    • 1...Sb4+
      • 2.Qxb4#
    • 1...Sf4
      • 2.Qb4#
      • 2.Qc5#
    • 1...Sc5+
      • 2.Qxc5#
    • 1...Se5
      • 2.Qb4#
      • 2.Qc5#
  • Tries
    • 1.Se5+?
      • 1...Sxe5
        • 2.Qb4#
        • 2.Qc5#
      • 1...Kxd4!
    • 1.Qxa3?
      • threat
        • 2.Rc3#
      • 1...Sb4+
        • 2.R3xb4#
        • 2.Qxb4#
      • 1...Sc5+
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...Qb2
        • 2.Sd2#
        • 2.Se3#
      • 1...Qd2
        • 2.Sxd2#
      • 1...Qa1
        • 2.Sd2#
        • 2.Se3#
      • 1...Qxa3+!
    • 1.Qe4?
      • threat
        • 2.Sa5#
      • 1...Sb4+
        • 2.R5xb4#
      • 1...Sc5+
        • 2.dxc5#
      • 1...Qd2
        • 2.Sxd2#
      • 1...Qh6!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Sa5#
      • 1...Sb4+
        • 2.R3xb4#
      • 1...Sc5+
        • 2.Rxc5#
      • 1...Qxe3
        • 2.Sxe3#
      • 1...Qd2
        • 2.Sxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • Q(a);N_GUARD::S(A),XQ(a)
    • Q(a);N_GUARD::S(A)
    • S(e);CHECK,N_GUARD::QAR1(H),XS(e)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • K(f);P-FLIGHT,XP(C)
    • Try
      • Q(H);XP(d)
      • Threat
        • R1(B)
      • Vars
        • Q(a);N_GUARD::S(A),XQ(a)
      • Refutation
        • Q(a);CHECK,XQ(H)
    • Try
      • Q(H);
      • Threat
        • S(G)
      • Vars
        • S(e);CHECK,N_GUARD::R1(D),XS(e)
        • S(e);CHECK,OGATE::QAR(H)+P(C),XS(e)
        • Q(a);N_GUARD::S(A),XQ(a)
      • Refutation
        • Q(a);P_PINS(G)
  • Actual
    • Q(H);
    • Threat
      • S(G)
    • Vars
      • S(e);CHECK,N_GUARD::R1(B),XS(e)
      • S(e);CHECK,N_GUARD::R1(D),XS(e)
      • Q(a);XQ(H)::S(A),XQ(a)
      • Q(a);N_GUARD::S(A),XQ(a)
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