MESON Chess Problem Database

Problem Display
PID: 143087 (5qnb/7b/2R1p2p/1P1k1n1r/pBp1pRNp/4p2r/K2pN3/Q2B4 w - - 0 1)

Costachel, Octav

Magyar Sakkvilag, 1930

5qnb/7b/2R1p2p/1P1k1n1r/pBp1pRNp/4p2r/K2pN3/Q2B4

#2

9 + 16

14869 British Championship Solving Ty. 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Qxe5#
    • 1...Sg3
      • 2.Sxe3#
    • 1...Sd4
      • 2.Sc3#
    • 1...Sd6
      • 2.Rc5#
    • 1...Sfe7
      • 2.Rd6#
    • 1...Sg7
      • 2.Qd4#
    • 1...Sf6
      • 2.Qe5#
  • Tries
    • 1.Rxf5+?
      • 1...Qxf5
        • 2.Rd6#
      • 1...Bxf5
        • 2.Sf4#
      • 1...Be5
        • 2.Sf4#
        • 2.Qd4#
        • 2.Qxe5#
      • 1...exf5
        • 2.Sf4#
      • 1...e5
        • 2.Sf4#
        • 2.Qd4#
      • 1...Rxf5!
    • 1.Qd4+?
      • 1...Sxd4
        • 2.Sc3#
      • 1...Bxd4!
  • Keys
    • 1.Bc2!
      • threat
        • 2.Bxe4#
      • 1...Sg3
        • 2.Sxe3#
      • 1...Sd4
        • 2.Sc3#
      • 1...Sd6
        • 2.Rc5#
      • 1...Sfe7
        • 2.Rd6#
      • 1...Sg7
        • 2.Qd4#
      • 1...Sf6
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • B(p);N_GUARD::QAR1(A),XB(p)
    • S(i);N_GUARD,S_CUTR(c)::S(G),XP(b)
    • S(i);SBLOCK,S_CUTB(p)::S(D)
    • S(i);SBLOCK,S_CUTQ(n)::R1(I)
    • S(i);N_GUARD,S_CUTQ(n)::R1(I)
    • S(i);N_GUARD,S_CUTB(p)::QAR1(A)
    • S(o);S_CUTB(p)::QAR1(A)
  • Tries
    • Try
      • R(F);CHECK,XS(i)
      • Vars
        • Q(n);XR(F)::R1(I)
        • B(m);XR(F)::S(D)
        • P(k);XR(F)::S(D)
      • Refutation
        • R(j);XR(F)
    • Try
      • Q(A);CHECK
      • Vars
        • S(i);SBLOCK,XQ(A)::S(D)
      • Refutation
        • B(p);XQ(A)
  • Actual
    • B(B);
    • Threat
      • B(B),XP(f)
    • Vars
      • S(i);N_GUARD,S_CUTR(c)::S(G),XP(b)
      • S(i);SBLOCK,S_CUTB(p)::S(D)
      • S(i);SBLOCK,S_CUTQ(n)::R1(I)
      • S(i);N_GUARD,S_CUTQ(n)::R1(I)
      • S(i);N_GUARD,S_CUTB(p)::QAR1(A)
      • S(o);S_CUTB(p)::QAR1(A)
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