MESON Chess Problem Database

Problem Display
PID: 117023 (bq1n3B/p2r1N2/7p/3k2pQ/4Rp2/8/3P4/1BR4K w - - 0 1)

Kopaev, Viacheslav Georgievich

Boletim da UBP, 1996

bq1n3B/p2r1N2/7p/3k2pQ/4Rp2/8/3P4/1BR4K

#2

8 + 9

6490 yacpdb 2009
3713 Snap 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Qe2?
      • threat
        • 2.Rd4#
        • 2.Qd3#
        • 2.Qc4#
      • 1...Qxb1
        • 2.Rd4#
        • 2.Qc4#
      • 1...Rxf7
        • 2.Rd4#
        • 2.Qd3#
      • 1...Sxf7
        • 2.Rd4#
        • 2.Qd3#
      • 1...Qe5
        • 2.Ba2#
        • 2.Qc4#
      • 1...Qc7
        • 2.Rd4#
        • 2.Qd3#
      • 1...Qb2
        • 2.Qc4#
      • 1...Qb3
        • 2.Rd4#
      • 1...Qb5
        • 2.Rd4#
        • 2.Qxb5#
      • 1...Qb6
        • 2.Qc4#
      • 1...Qc8
        • 2.Rd4#
        • 2.Qd3#
      • 1...Rc7
        • 2.Rd4#
        • 2.Qd3#
      • 1...Sc6
        • 2.Qc4#
      • 1...Se6
        • 2.Qc4#
      • 1...Qb4!
    • 1.Qg4?
      • threat
        • 2.Rd4#
      • 1...Qb4
        • 2.Qf5#
      • 1...Qb2
        • 2.Qxd7#
      • 1...Qb6
        • 2.Qf5#
      • 1...Sc6
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Qe5!
    • 1.Qg6?
      • threat
        • 2.Rd4#
      • 1...Qb4
        • 2.Qf5#
      • 1...Qe5
        • 2.Ba2#
      • 1...Qb6
        • 2.Qf5#
      • 1...Sc6
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Qb2!
    • 1.Qxg5+?
      • 1...Qe5
        • 2.Qxe5#
      • 1...hxg5!
  • Keys
    • 1.Qh3!
      • threat
        • 2.Rd4#
        • 2.Qd3#
      • 1...Qxb1
        • 2.Rd4#
        • 2.Qf5#
      • 1...Qb4
        • 2.Qf5#
      • 1...Qe5
        • 2.Qb3#
      • 1...Qb2
        • 2.Qxd7#
      • 1...Qb3
        • 2.Rd4#
        • 2.Qf5#
        • 2.Qxd7#
        • 2.Qxb3#
      • 1...Qb5
        • 2.Rd4#
        • 2.Qf5#
      • 1...Qb6
        • 2.Qf5#
      • 1...Sc6
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...f3
        • 2.Rd4#
      • 1...g4
        • 2.Qd3#

Anticipated by 271932(1994)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);N_PINP(c)
      • Threat
        • DUALS(3)
      • Vars
        • Q(h);::QAB1(F)
        • Q(h);::R1(E)
        • S(i);::QAB1(F)
      • Refutation
        • Q(h);
    • Try
      • Q(F);N_PINP(c)
      • Threat
        • R1(E)
      • Vars
        • Q(h);N_GUARD::QAR2(F)
        • Q(h);N_GUARD::QAR2(F),XR(f)
        • S(i);N_GUARD::QAB1(F)
        • S(i);N_GUARD::QAB1(F),XS(i)
      • Refutation
        • Q(h);
    • Try
      • Q(F);N_PINP(c)
      • Threat
        • R1(E)
      • Vars
        • Q(h);N_GUARD::QAR2(F)
        • Q(h);N_GUARD::B(A)
        • S(i);N_GUARD::QAB1(F)
        • S(i);N_GUARD::QAB1(F),XS(i)
      • Refutation
        • Q(h);
    • Try
      • Q(F);CHECK,XP(c)
      • Vars
        • Q(h);N_GUARD,P_SPINQ(h)::QAR1(F),XQ(h)
      • Refutation
        • P(d);XQ(F)
  • Actual
    • Q(F);N_PINP(c)
    • Threat
      • DUALS(2)
    • Vars
      • Q(h);N_GUARD::QAR2(F)
      • Q(h);N_GUARD::QAB(F)
      • Q(h);N_GUARD::QAR2(F),XR(f)
      • S(i);N_GUARD::QAB1(F)
      • S(i);N_GUARD::QAB1(F),XS(i)
      • P(a);::R1(E)
      • P(c);::QAR2(F)
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