MESON Chess Problem Database

Problem Display
PID: 135737 (6N1/1Qpp4/1p1k4/7R/1r1r1PK1/6B1/B7/3R4 w - - 0 1)

Ancin, Andrej

Sahs, 1963

6N1/1Qpp4/1p1k4/7R/1r1r1PK1/6B1/B7/3R4

#2

8 + 6

14649 Andrej Ancin - Chess Compositions 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Rxd4#
    • 1...Rb2
      • 2.Rxd4#
    • 1...Rd5
      • 2.Qxd5#
    • 1...c5
      • 2.Rh6#
    • 1...c6
      • 2.Qb8#
  • Tries
    • 1.Rd5+?
      • 1...Rxd5
        • 2.Qxd5#
      • 1...Ke6!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Qg6#
      • 1...Rd5
        • 2.Qxd5#
      • 1...c5
        • 2.f5#
      • 1...c6
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • R(a);N_GUARD::R(A),XR(b)
    • R(b);N_GUARD::QAR1(G),XR(b)
    • P(e);SBLOCK::R(F)
    • P(e);OGATEB,SBLOCK::QAB(G)
  • Tries
    • Try
      • R(F);CHECK,N_PINR(b)
      • Vars
        • R(b);OGATE,P_SPINR(b),XR(F)::QAR1(G),XR(b)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • Q(G);N_SPINP(D)
    • Threat
      • QAR(G)
    • Vars
      • R(b);N_GUARD::QAR1(G),XR(b)
      • P(e);SBLOCK::B(C)+P(D)
      • P(e);SBLOCK::QAB1(G)
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