MESON Chess Problem Database

Problem Display
PID: 242884 (B1NQ4/5b2/nR3pr1/2p1np2/2k2KpB/R2N1p2/1Pr5/8 w - - 0 1)

Degener, Udo

Thema Danicum, 1994

B1NQ4/5b2/nR3pr1/2p1np2/2k2KpB/R2N1p2/1Pr5/8

#2

9 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb2
      • 2.Sxb2#
    • 1...Rd2
      • 2.Rc3#
    • 1...Re2
      • 2.Rc3#
    • 1...Rf2
      • 2.Rc3#
    • 1...Rg2
      • 2.Rc3#
    • 1...Rh2
      • 2.Rc3#
    • 1...Rc3
      • 2.Rxc3#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Be8
      • 2.Qd5#
    • 1...Sxd3+
      • 2.Qxd3#
    • 1...Sc7
      • 2.Ra4#
    • 1...Sb8
      • 2.Ra4#
  • Tries
    • 1.Be1?
      • threat
        • 2.b3#
      • 1...Sxd3+
        • 2.Qxd3#
      • 1...Rxb2
        • 2.Sxb2#
        • 2.Rc3#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Rd2
        • 2.Rc3#
      • 1...Rc3
        • 2.Rxc3#
      • 1...Sd7!
    • 1.Bf2?
      • threat
        • 2.Sd6#
      • 1...Sxd3+
        • 2.Qxd3#
      • 1...Rxf2
        • 2.Rc3#
      • 1...Rc3
        • 2.Rxc3#
      • 1...Sc6!
    • 1.Qd4+?
      • 1...cxd4
        • 2.Sd6#
      • 1...Kxd4!
  • Keys
    • 1.Bxf6!
      • threat
        • 2.Sxe5#
      • 1...Sxd3+
        • 2.Qxd3#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Re2
        • 2.Rc3#
      • 1...Sc6
        • 2.b3#
      • 1...Sd7
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • R(a);XP(A)::S(C),XR(a)
    • R(a);N_GUARD::R1(B)
    • R(a);N_GUARD::R1(B),XR(a)
    • B(k);N_GUARD::QAB1(I),XB(k)
    • B(k);N_GUARD::QAB1(I)
    • S(f);CHECK,OGATE,XS(C)::QAB1(I),XS(f)
    • S(h);N_GUARD::R(B)
  • Tries
    • Try
      • B(E);
      • Threat
        • P(A)
      • Vars
        • S(f);CHECK,OGATE,XS(C)::QAB1(I),XS(f)
        • B(k);N_GUARD::QAB1(I),XB(k)
        • R(a);N_GUARD::R1(B)
        • R(a);N_GUARD::R1(B),XR(a)
      • Refutation
        • S(f);
    • Try
      • B(E);
      • Threat
        • S(H)
      • Vars
        • S(f);CHECK,OGATE,XS(C)::QAB1(I),XS(f)
        • R(a);N_GUARD,XB(E)::R1(B)
        • R(a);N_GUARD::R1(B),XR(a)
      • Refutation
        • S(f);
    • Try
      • Q(I);CHECK
      • Vars
        • P(e);SBLOCK,XQ(I)::S(H)
      • Refutation
        • K(c);P-FLIGHT,XQ(I)
  • Actual
    • B(E);XP(i)
    • Threat
      • S(C),XS(f)
    • Vars
      • S(f);CHECK,OGATE,XS(C)::QAB1(I),XS(f)
      • B(k);N_GUARD::QAB1(I),XB(k)
      • R(a);N_GUARD::R1(B)
      • S(f);::P(A)
      • S(f);::S(H)
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