MESON Chess Problem Database

Problem Display
PID: 59016 (8/4nNK1/8/5pPk/6pp/5QR1/8/8 w - - 0 1)

Savenok, Aleksandr Antolovich

Troll, 1999

8/4nNK1/8/5pPk/6pp/5QR1/8/8

#2

5 + 5

14503 Problemschach-Jahrbuch (1999) 2000

SOLUTION

  • SOUND
  • Sets
    • 1...hxg3
      • 2.Qh1#
    • 1...h3
      • 2.Rxh3#
    • 1...f4
      • 2.Qxg4#
  • Tries
    • 1.Rxg4?
      • threat
        • 2.Rg1#
        • 2.Rg2#
        • 2.Rg3#
        • 2.Ra4#
        • 2.Rb4#
        • 2.Rc4#
        • 2.Rd4#
        • 2.Re4#
        • 2.Rf4#
      • 1...h3
        • 2.Ra4#
        • 2.Rb4#
        • 2.Rc4#
        • 2.Rd4#
        • 2.Re4#
        • 2.Rf4#
        • 2.Qxh3#
      • 1...f4
        • 2.Rg1#
        • 2.Rg2#
        • 2.Rg3#
        • 2.Rxf4#
      • 1...fxg4!
    • 1.Qc6?
      • threat
        • 2.Qh6#
      • 1...Sg6
        • 2.Qxg6#
      • 1...Sg8
        • 2.Qg6#
      • 1...Sxc6!
    • 1.Qxf5?
      • threat
        • 2.Qxg4#
        • 2.Qh7#
      • 1...hxg3
        • 2.Qh7#
      • 1...Sg6
        • 2.Qxg4#
        • 2.Qxg6#
      • 1...Sg8
        • 2.Qxg4#
        • 2.Qg6#
        • 2.g6#
      • 1...Sxf5+!
  • Keys
    • 1.g6!
      • 1...Sxg6
        • 2.Qxf5#
      • 1...gxf3
        • 2.Rg5#
      • 1...hxg3
        • 2.Qh1#
      • 1...h3
        • 2.Rxh3#
      • 1...Sd5
        • 2.Qxf5#
      • 1...Sc6
        • 2.Qxf5#
      • 1...Sc8
        • 2.Qxf5#
      • 1...Sg8
        • 2.Qxf5#
      • 1...f4
        • 2.Qxg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATEB,XR(B)::QAR(A)
    • P(b);OGATEB::R(B),XP(b)
    • P(c);N_GUARD::QAB1(A),XP(a)
  • Tries
    • Try
      • R(B);XP(a)
      • Threat
        • DUALS(9)
      • Refutation
        • P(c);P_SPINP(c),XR(B)
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAR1(A)
      • Vars
        • S(e);N_GUARD::QAB1(A),XS(e)
        • S(e);N_GUARD::QAB1(A)
      • Refutation
        • S(e);XQ(A)
    • Try
      • Q(A);N_PINP(a),XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • P(b);XR(B)::QAR2(A)
      • Refutation
        • S(e);CHECK,XQ(A)
  • Actual
    • P(C);
    • Vars
      • S(e);N_GUARD,XP(C)::QAR2(A),XP(c)
      • P(a);N_SPINP(a),OGATE,XQ(A)::R1(B)
      • P(b);OGATEB,XR(B)::QAR(A)
      • P(b);OGATEB::R(B),XP(b)
      • S(e);N_GUARD::QAR2(A),XP(c)
      • P(c);N_GUARD::QAB1(A),XP(a)
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