MESON Chess Problem Database

Problem Display
PID: 135743 (3n1K1B/8/4pQ2/r1Rr1P2/2P1k1N1/4Ppp1/4B1N1/2q2R2 w - - 0 1)

Ancin, Andrej

Sahovski Glasnik, 1963

3n1K1B/8/4pQ2/r1Rr1P2/2P1k1N1/4Ppp1/4B1N1/2q2R2

#2

11 + 8

14649 Andrej Ancin - Chess Compositions 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Qe5#
    • 1...Rd2
      • 2.Qe5#
    • 1...Rd3
      • 2.Bxf3#
      • 2.Qe5#
    • 1...Rd4
      • 2.Qxd4#
      • 2.Qe5#
    • 1...Re5
      • 2.Qxe5#
    • 1...Rd6
      • 2.Qe5#
    • 1...Rd7
      • 2.Qe5#
    • 1...fxg2
      • 2.Rf4#
  • Tries
    • 1.Bd3+?
      • 1...Rxd3
        • 2.Qe5#
      • 1...Kxd3!
    • 1.Qd4+?
      • 1...Rxd4
        • 2.Sf6#
      • 1...Kxf5!
    • 1.Qxe6+?
      • 1...Re5
        • 2.Sf6#
        • 2.Qxe5#
      • 1...Sxe6+!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Sh6#
      • 1...Rxf5+
        • 2.Sf6#
      • 1...Kxf5
        • 2.Bd3#
      • 1...Qxe3
        • 2.S4xe3#
      • 1...fxe2
        • 2.Se5#
      • 1...fxg2
        • 2.Rf4#
      • 1...exf5
        • 2.Sf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • R(f);N_GUARD::QAR1(I)
    • R(f);N_GUARD::QAR1(I),XR(f)
    • P(b);OGATE,XS(C)::R1(A)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • R(f);SBLOCK,XB(B)::QAR1(I)
      • Refutation
        • K(d);S_FLIGHT,XB(B)
    • Try
      • Q(I);CHECK
      • Vars
        • R(f);XQ(I)::S(F)
      • Refutation
        • K(d);P_SPINP(b),P_SPINR(f),S_FLIGHT,XP(H)
    • Try
      • Q(I);CHECK,XP(g)
      • Refutation
        • S(h);CHECK,XQ(I)
  • Actual
    • Q(I);
    • Threat
      • QAR(I)+S(F)
    • Vars
      • R(f);CHECK,XP(H)::QAR(I)+S(F),DCHECK
      • K(d);P_SPINP(b),P_SPINR(f),S_FLIGHT,XP(H)::B(B)
      • Q(a);XP(D)::QAR(I)+S(F),XQ(a)
      • P(b);XB(B)::QAR(I)+S(F)
      • P(b);OGATE,XS(C)::R1(A)
      • P(g);SBLOCK,XP(H)::QAR(I)+S(F),DCHECK
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