MESON Chess Problem Database

Problem Display
PID: 254676 (1b2Q3/p7/4PBBp/1N1PpRpK/1P1pk1rp/1P1R1N2/b2PP3/8 w - - 0 1)

Ducak, Jan

idee & form, 2017

1b2Q3/p7/4PBBp/1N1PpRpK/1P1pk1rp/1P1R1N2/b2PP3/8

#2

14 + 10

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.Rxe5#
  • Tries
    • 1.Kxg4?
      • threat
        • 2.Rxe5#
      • 1...Kxd5
        • 2.Rxd4#
      • 1...h5+!
    • 1.Sxe5?
      • threat
        • 2.Rxd4#
      • 1...Kxd5
        • 2.Qc6#
      • 1...Bxe5!
    • 1.Bxe5?
      • threat
        • 2.Rxd4#
      • 1...Kxd5
        • 2.Sc3#
      • 1...Bxe5!
    • 1.Re3+?
      • 1...dxe3
        • 2.Sc3#
      • 1...Kxd5!
    • 1.Rf4+?
      • 1...Kxd5
        • 2.Be4#
        • 2.e4#
      • 1...Kxf4!
    • 1.Rxg5+?
      • 1...Kf4
        • 2.Rxg4#
      • 1...Kxd5!
    • 1.Qc6?
      • threat
        • 2.d6#
      • 1...Bd6
        • 2.Sxd6#
      • 1...Bxb3!
    • 1.d6?
      • threat
        • 2.Qc6#
      • 1...Kd5
        • 2.Rxe5#
      • 1...Bxb3!
  • Keys
    • 1.Sfxd4!
      • threat
        • 2.Sc3#
      • 1...Kxd5
        • 2.Qc6#
      • 1...exd4
        • 2.Rxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(d);SBLOCK::B(M)+R(I),DCHECK,XP(f)
  • Tries
    • Try
      • K(J);S_FLIGHT,XR(d)
      • Threat
        • B(M)+R(I),DCHECK,XP(f)
      • Vars
        • K(c);P_SPINP(b),S_CUTP(f),S_FLIGHT,XP(H)::R1(D),XP(b)
      • Refutation
        • P(h);CHECK
    • Try
      • S(E);XP(f)
      • Threat
        • R1(D),XP(b)
      • Vars
        • K(c);OGATEB,P_SPINP(b),S_FLIGHT,XP(H)::QAB1(N)
      • Refutation
        • B(j);XS(E)
    • Try
      • B(L);XP(f)
      • Threat
        • R1(D),XP(b)
      • Vars
        • K(c);P_SPINP(b),S_FLIGHT,XP(H)::S(G)
      • Refutation
        • B(j);XB(L)
    • Try
      • R(D);CHECK
      • Vars
        • P(b);XR(D)::S(G)
      • Refutation
        • K(c);P_SPINP(f),S_FLIGHT,XP(H)
    • Try
      • R(I);CHECK
      • Refutation
        • K(c);P-FLIGHT,XR(I)
    • Try
      • R(I);CHECK,XP(g)
      • Vars
        • K(c);N_GUARD,P-FLIGHT::R1(I),XR(d)
      • Refutation
        • K(c);P_SPINP(b),S_FLIGHT,XP(H)
    • Try
      • Q(N);
      • Threat
        • QAB(N)+P(H)
      • Vars
        • B(j);N_GUARD::S(G),XB(j)
      • Refutation
        • B(a);XP(C)
    • Try
      • P(H);
      • Threat
        • QAB(N)
      • Vars
        • K(c);N_GUARD,P_SPINP(b),S_FLIGHT::R1(I),XP(f)
      • Refutation
        • B(a);XP(C)
  • Actual
    • S(E);XP(b)
    • Threat
      • S(G)
    • Vars
      • K(c);OGATEB,P_SPINP(f),S_FLIGHT,XP(H)::QAB1(N)
      • P(f);OGATE,XS(E)::R1(D),XP(f)
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