MESON Chess Problem Database

Problem Display
PID: 214463 (Q5n1/2N2b2/2R3B1/2rN1n2/P3kP2/1P6/2p1K3/2B5 w - - 0 1)

Abbott, Joseph William

Nuova Rivista degli Scacchi, 1879

Q5n1/2N2b2/2R3B1/2rN1n2/P3kP2/1P6/2p1K3/2B5

#2

10 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Rxc4#
    • 1...Ra5
      • 2.Rc4#
    • 1...Rb5
      • 2.Rc4#
    • 1...Rxd5
      • 2.Rc4#
  • Tries
    • 1.Sc3+?
      • 1...Rxc3
        • 2.Rc4#
      • 1...Kd4!
    • 1.Bxf5+?
      • 1...Kd4
        • 2.Be3#
      • 1...Kxf5!
    • 1.Rxc5?
      • threat
        • 2.Rc4#
      • 1...Kd4
        • 2.Rc4#
      • 1...Bxg6!
  • Keys
    • 1.Sb5!
      • 1...Kxd5
        • 2.Rd6#
      • 1...Rxb5
        • 2.Rc4#
      • 1...Rxd5
        • 2.Rc4#
      • 1...Rxc6
        • 2.Sdc3#
      • 1...Bxd5
        • 2.Re6#
      • 1...Bxg6
        • 2.Re6#
      • 1...Rc3
        • 2.Sdxc3#
      • 1...Rc4
        • 2.Rxc4#
      • 1...Be6
        • 2.Rxe6#
      • 1...Be8
        • 2.Re6#
      • 1...Sf6
        • 2.Sxf6#
      • 1...Sh6
        • 2.Sf6#
      • 1...Se7
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 1
  • Sets
    • R(c);OGATE::R(G),XR(c)
    • R(c);OGATE::R(G)
    • R(c);OGATE,XS(F)::R(G)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • R(c);OGATE,XS(F)::QAB(J)+R(G),DCHECK
      • Refutation
        • K(b);N_SPINS(d),P-FLIGHT
    • Try
      • B(H);CHECK,XS(d)
      • Vars
        • K(b);P-FLIGHT::B(A)
      • Refutation
        • K(b);S_FLIGHT,XB(H)
    • Try
      • R(G);XR(c)
      • Threat
        • R(G)
      • Vars
        • K(b);N_SPINS(d),P-FLIGHT::R1(G)
      • Refutation
        • B(e);N_SPINS(d),XB(H)
  • Actual
    • S(I);
    • Vars
      • K(b);N_SPINS(d),OGATEB,S_FLIGHT,XS(F)::QAB(J)+R(G),DCHECK
      • R(c);OGATE,XS(I)::R(G)
      • R(c);OGATE,XS(F)::R(G)
      • R(c);N_GUARD,XR(G)::S(F)
      • B(e);N_GUARD,XS(F)::R(G)
      • B(e);N_GUARD,N_SPINS(d),XB(H)::R(G)
      • R(c);N_GUARD::S(F),XR(c)
      • R(c);OGATE::R(G),XR(c)
      • B(e);N_GUARD::R(G),XB(e)
      • B(e);N_GUARD::R(G)
      • S(f);N_GUARD::S(F),XS(f)
      • S(f);N_GUARD::S(F)
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