MESON Chess Problem Database

Problem Display
PID: 67336 (2n5/1R3pP1/2P1kpNp/3prN2/4RBp1/K2Q2nr/4p1B1/7b w - - 0 1)

Degener, Udo

1st HM., Pat a Mat, 1995

2n5/1R3pP1/2P1kpNp/3prN2/4RBp1/K2Q2nr/4p1B1/7b

#2

10 + 12

5417 FIDE Album (1995-1997) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf5
      • 2.Rxe5#
    • 1...Sd6
      • 2.Sd4#
    • 1...dxe4
      • 2.Qd7#
  • Tries
    • 1.Re3?
      • threat
        • 2.Sf8#
      • 1...Sxf5
        • 2.Qxd5#
      • 1...fxg6
        • 2.g8Q#
        • 2.g8B#
      • 1...Re4
        • 2.Sd4#
      • 1...Se4!
    • 1.Re7+?
      • 1...Kxf5
        • 2.R4xe5#
      • 1...Sxe7!
  • Keys
    • 1.Rd7!
      • threat
        • 2.Sd4#
      • 1...Kxf5
        • 2.Rxe5#
      • 1...Rxe4
        • 2.Qxd5#
      • 1...Sxf5
        • 2.Sf8#
      • 1...d4
        • 2.Sxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • K(h);N_SPINR(g),S_FLIGHT,XS(F)::QAB(C)+R(D),DCHECK,XR(g)
    • S(l);SBLOCK::S(F)
    • P(f);N_SPINR(g),OGATE,XR(D)::QAB1(C)
  • Tries
    • Try
      • R(D);
      • Threat
        • S(H)
      • Vars
        • S(c);SBLOCK,XS(F)::QAB1(C),XP(f)
        • P(k);XS(H)::P=Q
        • R(g);::S(F)
      • Refutation
        • S(c);N_SPINR(g)
    • Try
      • R(I);CHECK
      • Vars
        • K(h);N_SPINR(g),S_FLIGHT,XS(F)::QAB(C)+R(D),DCHECK,XR(g)
      • Refutation
        • S(l);XR(I)
  • Actual
    • R(I);
    • Threat
      • S(F)
    • Vars
      • K(h);N_SPINR(g),S_FLIGHT,XS(F)::QAB(C)+R(D),DCHECK,XR(g)
      • R(g);N_SPINR(g),XR(D)::QAB1(C),XP(f)
      • S(c);P_PINQ(C),SBLOCK,XS(F)::S(H)
      • P(f);::S(F),XP(f)
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