MESON Chess Problem Database

Problem Display
PID: 203338 (4R2B/Q7/4Nb2/2p2N2/2Rnk1pP/4P1p1/6P1/2K5 w - - 0 1)

Dorrell, AS

1st Prize, Daily News, 1924

4R2B/Q7/4Nb2/2p2N2/2Rnk1pP/4P1p1/6P1/2K5

#2

10 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sd6+?
      • 1...Kd3
        • 2.Sf4#
      • 1...Kd5
        • 2.Qxc5#
      • 1...Ke5
        • 2.Qxc5#
      • 1...Kxe3!
    • 1.Sf4+?
      • 1...Kxf5
        • 2.Qh7#
      • 1...Be5
        • 2.Rxe5#
      • 1...Be7!
    • 1.Sxc5+?
      • 1...Kxf5
        • 2.Qh7#
      • 1...Kd5!
    • 1.Sg5+?
      • 1...Kd5
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...Kxf5
        • 2.Qh7#
      • 1...Kd3!
  • Keys
    • 1.Qf7!
      • 1...Kd3
        • 2.Sf4#
      • 1...Kd5
        • 2.Sexd4#
      • 1...Ke5
        • 2.Sexd4#
      • 1...Kxf5
        • 2.Sg7#
      • 1...Bxh4
        • 2.Sxc5#
      • 1...Bxh8
        • 2.Sxc5#
      • 1...Be5
        • 2.Sxc5#
      • 1...Bg5
        • 2.Sxc5#
      • 1...Be7
        • 2.Sxc5#
      • 1...Bg7
        • 2.Sxc5#
      • 1...Bd8
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(c);N_SPINS(b),S_FLIGHT::S(G)
        • K(c);N_SPINS(b),S_FLIGHT::QAR1(H),XP(e)
        • K(c);N_SPINS(b),P-FLIGHT,P_SPINB(f)::QAR2(H),XP(e)
      • Refutation
        • K(c);N_SPINS(b),P-FLIGHT,XP(C)
    • Try
      • S(G);CHECK
      • Vars
        • K(c);N_SPINS(b),S_FLIGHT,XS(F)::QAB(H)
        • B(f);N_GUARD,P_SPINB(f)::R1(I),XB(f)
      • Refutation
        • B(f);P_SPINB(f)
    • Try
      • S(G);CHECK,XP(e)
      • Vars
        • K(c);N_SPINS(b),S_FLIGHT,XS(F)::QAB(H)
      • Refutation
        • K(c);N_SPINS(b),S_FLIGHT
    • Try
      • S(G);CHECK
      • Vars
        • K(c);N_SPINS(b),S_FLIGHT,XS(F)::QAB(H)
      • Refutation
        • K(c);N_SPINS(b),S_FLIGHT
  • Actual
    • Q(H);
    • Vars
      • K(c);N_SPINS(b),S_FLIGHT::S(G)
      • K(c);N_SPINS(b),S_FLIGHT::QAB(H)+S(G),XS(b)
      • K(c);N_SPINS(b),P-FLIGHT,P_SPINB(f)::R(I)+S(G),XS(b)
      • K(c);N_SPINS(b),P_SPINB(f),S_FLIGHT,XS(F)::S(G)
      • B(f);XP(E)::R(I)+S(G),DCHECK,XP(e)
      • B(f);XB(J)::R(I)+S(G),DCHECK,XP(e)
      • B(f);::S(G),XP(e)
      • B(f);P_PINP(C)::R(I)+S(G),DCHECK,XP(e)
      • B(f);::R(I)+S(G),DCHECK,XP(e)
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