MESON Chess Problem Database

Problem Display
PID: 60218 (2n5/2Q2p2/k7/8/1Kp3r1/N6R/4B3/8 w - - 0 1)

Dyachuk, Vasyl Vasilovich

stern, 2000

2n5/2Q2p2/k7/8/1Kp3r1/N6R/4B3/8

#2

5 + 5

15391 Problemschach-Jahrbuch (2000) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Bxc4#
    • 1...Rg2
      • 2.Bxc4#
    • 1...Rg3
      • 2.Bxc4#
    • 1...Rg6
      • 2.Bxc4#
    • 1...Rg7
      • 2.Bxc4#
    • 1...Rg8
      • 2.Bxc4#
  • Tries
    • 1.Sb5?
      • threat
        • 2.Ra3#
      • 1...c3+
        • 2.Sd4#
      • 1...Sb6
        • 2.Qa7#
      • 1...Rg3!
    • 1.Rh6+?
      • 1...Rg6
        • 2.Bxc4#
      • 1...Sb6
        • 2.Rxb6#
        • 2.Qxb6#
      • 1...Sd6
        • 2.Rxd6#
      • 1...f6!
  • Keys
    • 1.Sxc4!
      • threat
        • 2.Ra3#
      • 1...Rxc4+
        • 2.Bxc4#
      • 1...Rg3
        • 2.Se3#
      • 1...Rg5
        • 2.Se5#
      • 1...Sb6
        • 2.Qxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD::B(A),XP(a)
  • Tries
    • Try
      • S(B);N_PINP(a)
      • Threat
        • R(C)
      • Vars
        • P(a);CHECK::B(A)+S(B)
        • S(e);N_GUARD::QAR1(E)
      • Refutation
        • R(b);
    • Try
      • R(C);CHECK
      • Vars
        • R(b);P_SPINR(b)::B(A),XP(a)
        • S(e);N_GUARD,P_SPINS(e)::R(C),XS(e)
      • Refutation
        • P(d);
  • Actual
    • S(B);P_SPINS(B),XP(a)
    • Threat
      • R(C)
    • Vars
      • R(b);CHECK,OGATE,P_SPINR(b),XS(B)::B(A),XR(b)
      • R(b);N_PINS(B)::B(A)+S(B)
      • S(e);N_GUARD::QAR1(E),XS(e)
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