MESON Chess Problem Database

Problem Display
PID: 268404 (2B5/3R1p2/1Q3PN1/rRnr1k1P/p1KpN1p1/4p1P1/8/8 w - - 0 1)

Cristoffanini, Guido

Chess Amateur (The), 1928

2B5/3R1p2/1Q3PN1/rRnr1k1P/p1KpN1p1/4p1P1/8/8

#2

10 + 9

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Sb3
      • 2.Re7#
    • 1...Sd3
      • 2.Re7#
    • 1...Sxe4
      • 2.Rdxd5#
    • 1...Sa6
      • 2.Re7#
    • 1...Sb7
      • 2.Re7#
  • Tries
    • 1.Re7+?
      • 1...Rd7
        • 2.Sh4#
        • 2.Bxd7#
        • 2.Re5#
        • 2.Qxc5#
      • 1...Sd7
        • 2.Sh4#
        • 2.Bxd7#
      • 1...Se6!
    • 1.Qxc5?
      • threat
        • 2.Re7#
        • 2.Qxd5#
      • 1...Kxe4
        • 2.Qxd5#
      • 1...Ke6
        • 2.Rxd5#
        • 2.Rd6#
        • 2.Re7#
        • 2.Qxd5#
      • 1...Rxb5
        • 2.Re7#
      • 1...Ra6
        • 2.Qxd5#
      • 1...Ra7
        • 2.Qxd5#
      • 1...Ra8
        • 2.Qxd5#
      • 1...Re5
        • 2.Rxd4#
        • 2.Qxe5#
      • 1...Rxc5+!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qxd5#
      • 1...Kxe4
        • 2.Qxd5#
      • 1...Rxd7
        • 2.Bxd7#
        • 2.Qd5#
      • 1...Sxe4
        • 2.Rdxd5#
      • 1...Re5
        • 2.Sh4#
      • 1...Rd6
        • 2.Rxd6#
      • 1...Sd3
        • 2.Re7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • S(f);N_GUARD,P_SPINR(g)::B(J)+R(I)
    • S(f);P_SPINR(g),SBLOCK,XS(C)::B(J)+R(I),DCHECK,XR(g)
  • Tries
    • Try
      • R(I);CHECK
      • Refutation
        • S(f);P_SPINR(g),P_SPINS(f)
    • Try
      • Q(F);P_PINR(g),XS(f)
      • Threat
        • DUALS(2)
      • Vars
        • K(h);N_SPINR(g),S_FLIGHT,XS(C)::QAB1(F),XR(g)
        • R(e);XR(D)::B(J)+R(I)
        • R(e);::QAR2(F),XR(g)
      • Refutation
        • R(g);CHECK,XQ(F)
  • Actual
    • Q(F);
    • Threat
      • QAR2(F),XR(g)
    • Vars
      • K(h);P_SPINR(g),S_FLIGHT,XS(C)::QAB1(F),XR(g)
      • S(f);P_SPINR(g),SBLOCK,XS(C)::B(J)+R(I),DCHECK,XR(g)
      • R(g);SBLOCK::S(H)
      • R(g);P_SPINS(f)::B(J)+R(I),XR(g)
      • S(f);N_GUARD,P_SPINR(g)::B(J)+R(I)
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