MESON Chess Problem Database

Problem Display
PID: 55493 (b7/4p3/1b3p2/3nPB2/1ppNRPp1/1p1kP1R1/1p1P2K1/2nQ4 w - - 0 1)

Prins, Hendrik

1st HM., Gevers MT, 1983

b7/4p3/1b3p2/3nPB2/1ppNRPp1/1p1kP1R1/1p1P2K1/2nQ4

#2

10 + 12

3748 FIDE Album (1983-1985) 1992
5110 Bekroonde Problemen 2002
23 Die Schwalbe 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd4
      • 2.Rxd4#
    • 1...Sa2
      • 2.Qe2#
    • 1...Se2
      • 2.Qxe2#
    • 1...Sxe3+
      • 2.Rxe3#
    • 1...Sxf4+
      • 2.exf4#
    • 1...fxe5
      • 2.Rxe5#
  • Tries
    • 1.Se2?
      • threat
        • 2.Rd4#
      • 1...Sxe3+
        • 2.dxe3#
      • 1...Sxf4+
        • 2.Sxf4#
      • 1...Bd4
        • 2.Rxd4#
      • 1...Sc3
        • 2.dxc3#
      • 1...Sc7!
    • 1.Qf1+?
      • 1...Se2
        • 2.Qxe2#
      • 1...Kxd2!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Rd4#
      • 1...Sxe3+
        • 2.Rexe3#
      • 1...Sxf4+
        • 2.Rxf4#
      • 1...Bd4
        • 2.Rxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • B(i);OGATE,XS(F)::B(J)+R(G),DCHECK,XB(i)
    • S(a);N_GUARD::QAB1(A)
    • S(a);N_GUARD::QAB1(A),XS(a)
    • S(h);CHECK,OGATE,P_PINR(G),P_SPINS(h),XP(D)::R1(E),XS(h)
    • S(h);CHECK,OGATE,P_PINR(G),XP(H)::R(E)+P(D),XS(h)
    • P(j);OGATE,XP(I)::B(J)+R(G),XP(j)
  • Tries
    • Try
      • S(F);
      • Threat
        • B(J)+R(G),DCHECK
      • Vars
        • S(h);CHECK,OGATE,P_PINR(G),P_SPINS(h),XP(D)::QAR(A)+P(B),XS(h)
        • S(h);CHECK,P_PINR(G),XP(H)::S(F),XS(h)
        • B(i);::B(J)+R(G),DCHECK,XB(i)
        • S(h);OGATE,P_PINR(G)::QAR(A)+P(B),XS(h)
      • Refutation
        • S(h);P_PINR(G)
    • Try
      • Q(A);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(A),XS(a)
      • Refutation
        • K(d);P-FLIGHT,XP(B)
  • Actual
    • S(F);
    • Threat
      • B(J)+R(G),DCHECK
    • Vars
      • S(h);CHECK,OGATE,P_SPINS(h),XP(D)::B(J)+R(G),DCHECK,XS(h)
      • S(h);CHECK,OGATE,XP(H)::B(J)+R(G),XS(h)
      • B(i);::B(J)+R(G),DCHECK,XB(i)
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Developed and maintained by Brian Stephenson.
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