MESON Chess Problem Database

Problem Display
PID: 159530 (8/8/qR6/p7/N7/3pQP2/r2r4/1bkBK2R w K - 0 1)

Djurasevic, Branislav

The Problemist, 1990

8/8/qR6/p7/N7/3pQP2/r2r4/1bkBK2R

#2

7 + 7

15526 Svi Moji Sahovski Problemi (Djurasevic) 1992

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qxd2#
    • 1...Ra3
      • 2.Qxd2#
    • 1...Rxa4
      • 2.Qxd2#
    • 1...Bc2
      • 2.Qxd2#
  • Tries
    • 1.Bb3?
      • threat
        • 2.0-0#
      • 1...Rxa4
        • 2.Qxd2#
      • 1...Bc2!
    • 1.0-0?
      • threat
        • 2.Bb3#
      • 1...Rxa4
        • 2.Bxa4#
      • 1...Rc2
        • 2.Be2#
      • 1...Bc2!
  • Keys
    • 1.Bc2!
      • threat
        • 2.Qxd2#
      • 1...Kxc2
        • 2.Qxd2#
      • 1...Rxc2
        • 2.0-0#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(c);N_GUARD::QAB1(D),XR(d)
    • R(c);N_GUARD,XS(F)::QAB1(D),XR(d)
    • B(a);S_CUTR(c)::QAB1(D),XR(d)
  • Tries
    • Try
      • B(A);
      • Threat
        • 0-0
      • Vars
        • R(c);N_GUARD,XS(F)::QAB1(D),XR(d)
      • Refutation
        • B(a);
    • Try
      • K(B);0-0
      • Threat
        • R(C)+B(A)
      • Vars
        • R(c);OGATE,XS(F)::R(C)+B(A),XR(c)
        • R(c);SBLOCK::R(C)+B(A)
      • Refutation
        • B(a);
  • Actual
    • B(A);
    • Threat
      • QAB1(D),XR(d)
    • Vars
      • K(b);N_SPINR(d),P-FLIGHT,XB(A)::QAR1(D),XR(d)
      • R(c);SBLOCK,XB(A)::0-0
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