MESON Chess Problem Database

Problem Display
PID: 254880 (1B1R4/4nK2/8/2P1NP2/2p1k1P1/2PNpp1P/4nr2/1B1b4 w - - 0 1)

Tkachenko, Sergiy Ivanovich

idee & form, 2017

1B1R4/4nK2/8/2P1NP2/2p1k1P1/2PNpp1P/4nr2/1B1b4

#2

11 + 8

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Rd4#
    • 1...Sg1
      • 2.Rd4#
    • 1...Sg3
      • 2.Rd4#
    • 1...Sd4
      • 2.Rxd4#
    • 1...Sf4
      • 2.Sxf2#
      • 2.Rd4#
  • Tries
    • 1.Se1+?
      • 1...Kf4
        • 2.S5xf3#
      • 1...Bc2!
    • 1.Sxc4?
      • threat
        • 2.Sxf2#
      • 1...Rf1
        • 2.Sf2#
      • 1...Rg2
        • 2.Sf2#
      • 1...Rh2
        • 2.Sf2#
      • 1...Bc2!
    • 1.Sc6?
      • threat
        • 2.Sxf2#
      • 1...cxd3
        • 2.Bxd3#
      • 1...Rf1
        • 2.Sf2#
      • 1...Rg2
        • 2.Sf2#
      • 1...Rh2
        • 2.Sf2#
      • 1...Bc2!
    • 1.Sg6?
      • threat
        • 2.Sxf2#
      • 1...cxd3
        • 2.Bxd3#
      • 1...Rf1
        • 2.Sf2#
      • 1...Rg2
        • 2.Sf2#
      • 1...Rh2
        • 2.Sf2#
      • 1...Bc2!
    • 1.Sd7?
      • threat
        • 2.Sf6#
      • 1...Kd5
        • 2.Sb4#
      • 1...Sd5
        • 2.Sxf2#
      • 1...Sg8!
  • Keys
    • 1.Sxf3!
      • threat
        • 2.Sg5#
      • 1...Kxf3
        • 2.Se1#
      • 1...Rxf3
        • 2.Sf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • S(b);N_GUARD::R1(K)
    • S(b);N_GUARD::R1(K),XS(b)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(g);P-FLIGHT,S_CUTB(a)::B(J)+S(G),XP(e)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • S(G);XP(f)
      • Threat
        • B(A)+S(C),DCHECK,XR(c)
      • Vars
        • R(c);::B(A)+S(C),DCHECK
      • Refutation
        • B(a);
    • Try
      • S(G);
      • Threat
        • B(A)+S(C),DCHECK,XR(c)
      • Vars
        • P(f);OGATE,P_SPINP(f),XS(C)::B(A),XP(f)
        • R(c);::B(A)+S(C),DCHECK
      • Refutation
        • B(a);
    • Try
      • S(G);
      • Threat
        • B(A)+S(C),DCHECK,XR(c)
      • Vars
        • P(f);OGATE,P_SPINP(f),XS(C)::B(A),XP(f)
        • R(c);::B(A)+S(C),DCHECK
      • Refutation
        • B(a);
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • K(g);S_CUTB(a),S_FLIGHT::S(C)
        • S(h);SBLOCK::B(A)+S(C),DCHECK,XR(c)
      • Refutation
        • S(h);
  • Actual
    • S(G);XP(e)
    • Threat
      • S(G)
    • Vars
      • K(g);S_CUTB(a),S_FLIGHT,XS(G)::S(C)
      • R(c);P_PINP(H),SBLOCK,XS(G)::B(A)+S(C),DCHECK
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