MESON Chess Problem Database

Problem Display
PID: 232842 (1BK1R3/3Q3B/p7/rp1n4/1PNk3r/1R3p2/4b3/4q3 w - - 0 1)

Ellerman, Arnoldo

Il Due Mosse, 1955

1BK1R3/3Q3B/p7/rp1n4/1PNk3r/1R3p2/4b3/4q3

#2

8 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Re4#
    • 1...Rh2
      • 2.Re4#
    • 1...Rh3
      • 2.Re4#
    • 1...Re4
      • 2.Rxe4#
    • 1...Rh5
      • 2.Re4#
    • 1...Rh6
      • 2.Re4#
    • 1...Bxc4
      • 2.Ba7#
    • 1...bxc4
      • 2.Be5#
  • Keys
    • 1.Rd8!
      • threat
        • 2.Qxd5#
      • 1...Kxc4
        • 2.Qxd5#
      • 1...Bxc4
        • 2.Qa7#
      • 1...bxc4
        • 2.Qg7#
      • 1...Rh5
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • R(e);N_GUARD::R1(H)
    • R(e);N_GUARD::R1(H),XR(e)
    • B(b);SBLOCK,XS(C)::B(F)
    • P(g);SBLOCK,XS(C)::B(F)
  • Actual
    • R(H);
    • Threat
      • QAR1(D),XS(h)
    • Vars
      • K(d);N_SPINS(h),P-FLIGHT,XS(C)::QAB1(D),XS(h)
      • B(b);SBLOCK,XS(C)::QAB(D)
      • P(g);SBLOCK,XS(C)::QAB(D)
      • R(e);N_GUARD::QAR(D)
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