MESON Chess Problem Database

Problem Display
PID: 61576 (1b5q/4p1n1/1R1np3/PbkNpRrr/2p2P1p/2P5/8/2KQ4 w - - 0 1)

Stojnic, Dragan

1st Prize, Wola Gulowska, 2004

1b5q/4p1n1/1R1np3/PbkNpRrr/2p2P1p/2P5/8/2KQ4

#2

8 + 13

56 The Problemist 2005
14475 Mat Plus Review 2007
15323 FIDE Album (2004-2006) 2013

SOLUTION

  • SOUND
  • Sets
    • 1...exf4
      • 2.Qd4#
    • 1...e4
      • 2.Qd4#
  • Tries
    • 1.Sf6?
      • threat
        • 2.Qd4#
      • 1...Rxf5
        • 2.Qg1#
      • 1...Sdxf5
        • 2.Se4#
      • 1...exf5
        • 2.Qd5#
      • 1...Rg1
        • 2.Qxg1#
      • 1...Sgxf5!
    • 1.Sc7?
      • threat
        • 2.Qd4#
      • 1...Rxf5
        • 2.Qg1#
      • 1...Sgxf5
        • 2.Sxe6#
      • 1...exf5
        • 2.Qd5#
      • 1...Rg1
        • 2.Qxg1#
      • 1...Sdxf5!
    • 1.Qg1+?
      • 1...Kxd5
        • 2.Qd4#
      • 1...Rxg1+!
  • Keys
    • 1.Rxe5!
      • threat
        • 2.Qd4#
      • 1...Rg1
        • 2.Qxg1#
      • 1...Sdf5
        • 2.Sc7#
      • 1...Sgf5
        • 2.Sf6#

There are these afters: 134452

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • P(e);N_GUARD,XP(D)::QAB1(B)
    • P(e);N_GUARD::QAB1(B)
  • Tries
    • Try
      • S(F);P_PINP(e)
      • Threat
        • QAB1(B)
      • Vars
        • R(f);N_GUARD,N_SPINP(e),XR(G)::QAB(B)
        • S(h);N_GUARD,N_SPINP(e),XR(G)::S(F)
        • P(i);N_GUARD,N_SPINP(e),XR(G)::QAR1(B)
        • R(f);N_GUARD,P_PINQ(B)::QAB(B),XR(f)
      • Refutation
        • S(k);N_SPINP(e),XR(G)
    • Try
      • S(F);P_PINP(e)
      • Threat
        • QAB1(B)
      • Vars
        • R(f);N_GUARD,N_SPINP(e),XR(G)::QAB(B)
        • S(k);N_GUARD,N_SPINP(e),XR(G)::S(F),XP(i)
        • P(i);N_GUARD,N_SPINP(e),XR(G)::QAR1(B)
        • R(f);N_GUARD,P_PINQ(B)::QAB(B),XR(f)
      • Refutation
        • S(h);N_SPINP(e),XR(G)
    • Try
      • Q(B);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINP(e),XS(F)::QAR1(B)
      • Refutation
        • R(f);CHECK,XQ(B)
  • Actual
    • R(G);XP(e)
    • Threat
      • QAB1(B)
    • Vars
      • R(f);N_GUARD,P_PINQ(B)::QAB(B),XR(f)
      • S(h);S_CUTR(f)::R(G)+S(F)
      • S(k);S_CUTR(f)::R(G)+S(F)
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