MESON Chess Problem Database

Problem Display
PID: 253698 (8/K2p4/p7/3N3R/1PPk1pP1/1PN2p1Q/1n1Pn1b1/1B2Rq2 w - - 0 1)

Styger, Christian

idee & form, 2018

8/K2p4/p7/3N3R/1PPk1pP1/1PN2p1Q/1n1Pn1b1/1B2Rq2

#2

12 + 9

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Re4#
    • 1...Sg1
      • 2.Re4#
    • 1...Sxc3
      • 2.dxc3#
    • 1...a5
      • 2.Sb5#
  • Tries
    • 1.Kxa6?
      • threat
        • 2.Sb5#
      • 1...Sxc3
        • 2.dxc3#
      • 1...Sd3!
    • 1.Sxe2+?
      • 1...fxe2
        • 2.Qc3#
      • 1...Qxe2!
    • 1.Sxf4?
      • threat
        • 2.Rd5#
      • 1...Sxf4
        • 2.Re4#
      • 1...f2
        • 2.Qe3#
      • 1...d5
        • 2.Se6#
        • 2.Rxd5#
      • 1...Sxc3!
    • 1.Se7?
      • threat
        • 2.Rd5#
      • 1...Sxc3
        • 2.Sf5#
      • 1...d5
        • 2.Sc6#
        • 2.Rxd5#
      • 1...f2!
  • Keys
    • 1.Se3!
      • threat
        • 2.Rd5#
      • 1...Sxc3
        • 2.Sf5#
      • 1...f2
        • 2.Sc2#
      • 1...d5
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(c);OGATE::R1(B)
    • S(c);OGATE,XS(E)::P(C),XS(c)
    • P(h);N_GUARD::S(E)
  • Tries
    • Try
      • K(L);P-FLIGHT,XP(h)
      • Threat
        • S(E)
      • Vars
        • S(c);OGATE,P_PINP(H),XS(E)::P(C),XS(c)
      • Refutation
        • S(b);
    • Try
      • S(E);CHECK,XS(c)
      • Vars
        • P(e);OGATE,XS(E)::QAB1(F)
      • Refutation
        • Q(a);XS(E)
    • Try
      • S(J);XP(g)
      • Threat
        • R1(K)
      • Vars
        • S(c);OGATE,XS(J)::R1(B)
        • P(e);OGATE::QAB1(F)
      • Refutation
        • S(c);XS(E)
    • Try
      • S(J);
      • Threat
        • R1(K)
      • Vars
        • S(c);XS(E)::S(J)
      • Refutation
        • P(e);
  • Actual
    • S(J);
    • Threat
      • R1(K)
    • Vars
      • S(c);XS(E)::S(J)
      • P(e);::S(J)
      • P(i);::R1(K),XP(i)
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