MESON Chess Problem Database

Problem Display
PID: 94563 (8/2p2pp1/n1N2p2/5Q2/2k1p3/2p5/2P1n3/K6R w - - 0 1)

Chepizhni, Viktor Ivanovich

1st HM., Magadanskaya Pravda, 1997

8/2p2pp1/n1N2p2/5Q2/2k1p3/2p5/2P1n3/K6R

#2

5 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rd1?
      • threat
        • 2.Qd5#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sf4
        • 2.Rd4#
      • 1...Sb4
        • 2.Sa5#
      • 1...Sc5!
    • 1.Rh5?
      • threat
        • 2.Qb5#
        • 2.Qd5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sd4
        • 2.Qd5#
      • 1...Sf4
        • 2.Qxe4#
        • 2.Qb5#
      • 1...Sb4
        • 2.Qb5#
        • 2.Qc5#
      • 1...g5!
  • Keys
    • 1.Rb1!
      • threat
        • 2.Qb5#
      • 1...Sd4
        • 2.Sa5#
      • 1...Sb4
        • 2.Rxb4#
      • 1...Sc5
        • 2.Rb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Threat
        • QAB1(D)
      • Vars
        • S(a);N_GUARD::R1(B),XS(a)
        • S(a);N_GUARD::R1(B)
        • S(e);SBLOCK::S(E)
      • Refutation
        • S(e);
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(e);N_GUARD::QAR1(D),XS(e)
        • S(a);::QAB1(D)
      • Refutation
        • P(i);
  • Actual
    • R(B);
    • Threat
      • QAB1(D)
    • Vars
      • S(a);SBLOCK::S(E)
      • S(e);N_GUARD::R1(B),XS(e)
      • S(e);N_GUARD::R1(B)
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