MESON Chess Problem Database

Problem Display
PID: 85485 (n3r3/KB2p1Qp/4p1bb/1p3k1p/5N1P/2n4P/1R4N1/B7 w - - 0 1)

Petrusenko, Alexey Matveevich

Vovnejko, Viktor Ivanovich

Praca, 1995

n3r3/KB2p1Qp/4p1bb/1p3k1p/5N1P/2n4P/1R4N1/B7

#2

9 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sd3?
      • threat
        • 2.Qe5#
      • 1...Be3+
        • 2.Sxe3#
      • 1...Bxg7
        • 2.Rf2#
      • 1...e5
        • 2.Qxe5#
      • 1...Bf7
        • 2.Qxf7#
      • 1...Bf4!
    • 1.Rb4?
      • threat
        • 2.Se3#
      • 1...Bxf4
        • 2.Rxf4#
      • 1...Sd1
        • 2.Be4#
        • 2.Qe5#
      • 1...Se4
        • 2.Bxe4#
        • 2.Qe5#
      • 1...Sd5
        • 2.Qe5#
      • 1...Bxg7!
    • 1.Rxb5+?
      • 1...Sd5
        • 2.Qe5#
      • 1...e5
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...Sxb5+!
  • Keys
    • 1.Rf2!
      • threat
        • 2.Se3#
      • 1...Bxg7
        • 2.Sd3#
      • 1...Sd5
        • 2.Qe5#
      • 1...Sd1
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR1(I)
      • Vars
        • B(g);CHECK,N_GUARD::S(C),XB(g)
        • B(g);N_GUARD,XQ(I)::R(B)
        • P(e);::QAR1(I),XP(e)
        • B(f);N_GUARD::QAR2(I),XB(f)
      • Refutation
        • B(g);
    • Try
      • R(B);
      • Threat
        • S(C)
      • Vars
        • B(g);OGATE,XS(E)::R1(B),XB(g)
        • S(a);::QAR1(I)
      • Refutation
        • B(g);XQ(I)
    • Try
      • R(B);CHECK,XP(b)
      • Vars
        • S(a);P_SPINS(a)::QAR1(I)
      • Refutation
        • S(a);CHECK,XR(B)
  • Actual
    • R(B);
    • Threat
      • S(C)
    • Vars
      • B(g);N_GUARD,XQ(I)::R(B)+S(E)
      • S(a);::QAR1(I)
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