MESON Chess Problem Database

Problem Display
PID: 108212 (8/2rp4/4p3/8/1QqrkPB1/4N1P1/2P1p3/1N1R2BK w - - 0 1)

Bourd, Evgeny

Novice Composers TT, 2002

8/2rp4/4p3/8/1QqrkPB1/4N1P1/2P1p3/1N1R2BK

#2

10 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.Sd2#
      • 2.Rxd4#
      • 2.Qxd4#
    • 1...Qb3
      • 2.Sd2#
      • 2.Rxd4#
      • 2.Qxd4#
    • 1...Qd3
      • 2.cxd3#
    • 1...Qb5
      • 2.Sd2#
      • 2.Rxd4#
      • 2.Qxd4#
    • 1...Qd5
      • 2.Sd2#
    • 1...Qa6
      • 2.Sd2#
      • 2.Rxd4#
      • 2.Qxd4#
    • 1...Qxc2
      • 2.Rxd4#
      • 2.Qxd4#
    • 1...Qc5
      • 2.Sd2#
    • 1...Qc6
      • 2.Sd2#
      • 2.Rxd4#
      • 2.Qxd4#
    • 1...Rd5
      • 2.Sc3#
    • 1...Rd6
      • 2.Sc3#
  • Tries
    • 1.Rxd4+?
      • 1...Qxd4
        • 2.Sd2#
      • 1...Kxd4!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sf6#
      • 1...Kxd5
        • 2.Bf3#
      • 1...Qxd5
        • 2.Sd2#
      • 1...Rxd5
        • 2.Sc3#
      • 1...exd5
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(b);OGATE,P_SPINR(c)::P(E),XQ(b)
    • Q(b);P_SPINR(c)::S(A)
    • R(c);P_SPINQ(b)::S(A)
  • Tries
    • Try
      • R(B);CHECK,XR(c)
      • Vars
        • Q(b);P_SPINQ(b),XR(B)::S(A)
      • Refutation
        • K(d);P-FLIGHT,P_SPINQ(b),XR(B)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(d);P_SPINR(c),S_FLIGHT,XS(F)::B(J)
      • Q(b);P_SPINR(c),SBLOCK,XS(F)::S(A)
      • R(c);P_SPINQ(b),XS(F)::S(A)
      • P(e);OGATEB,SBLOCK,XS(F)::QAR(H)
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