MESON Chess Problem Database

Problem Display
PID: 248661 (3n4/B2Q4/n2p2K1/3k1p2/P1p1p3/1bR1RN2/7b/3N4 w - - 0 1)

Leroy, Dominique

Het Belgisch Schaakbord (L'Echiquier Belge), 2002

3n4/B2Q4/n2p2K1/3k1p2/P1p1p3/1bR1RN2/7b/3N4

#2

8 + 9

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Qf7#
    • 1...Se6
      • 2.Qb7#
  • Tries
    • 1.Rcd3+?
      • 1...exd3
        • 2.Sc3#
      • 1...cxd3!
    • 1.Rxc4?
      • threat
        • 2.Rd4#
      • 1...Kxc4
        • 2.Qb5#
      • 1...Bxc4
        • 2.Sc3#
      • 1...Sc6
        • 2.Qf7#
      • 1...Se6
        • 2.Qc6#
      • 1...Be5!
    • 1.Red3+?
      • 1...cxd3
        • 2.Se3#
      • 1...exd3!
    • 1.Qf7+?
      • 1...Kc6
        • 2.Sd4#
      • 1...Se6
        • 2.Qb7#
      • 1...Sxf7!
  • Keys
    • 1.Rxe4!
      • threat
        • 2.Rd4#
      • 1...Kxe4
        • 2.Qxf5#
      • 1...fxe4
        • 2.Se3#
      • 1...Be5
        • 2.Rxe5#
      • 1...Bg1
        • 2.Re5#
      • 1...Sc6
        • 2.Qe6#
      • 1...Se6
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(i);N_GUARD,SBLOCK::QAB(H)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • P(d);XR(B)::S(A)
      • Refutation
        • P(c);XR(B)
    • Try
      • R(B);XP(c)
      • Threat
        • R1(B)
      • Vars
        • K(e);N_SPINP(h),S_FLIGHT,XR(B)::QAB1(H)
        • B(b);SBLOCK,XR(B)::S(A)
        • S(i);N_GUARD::QAB(H)
        • S(i);N_GUARD,SBLOCK::QAB1(H)
      • Refutation
        • B(a);
    • Try
      • R(C);CHECK
      • Vars
        • P(c);XR(C)::S(A)
      • Refutation
        • P(d);XR(C)
    • Try
      • Q(H);CHECK,N_PINP(h)
      • Vars
        • K(e);P_SPINP(c),S_FLIGHT::S(D)
        • S(i);N_GUARD,P_SPINS(i),SBLOCK::QAB(H)
      • Refutation
        • S(i);XQ(H)
  • Actual
    • R(C);XP(d)
    • Threat
      • R1(C)
    • Vars
      • K(e);N_SPINP(h),S_FLIGHT,XR(C)::QAB1(H),XP(f)
      • P(f);SBLOCK,XR(C)::S(A)
      • B(a);N_GUARD::R1(C),XB(a)
      • B(a);N_GUARD::R1(C)
      • S(i);N_GUARD,SBLOCK::QAB1(H)
      • S(i);N_GUARD::QAB(H)
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