MESON Chess Problem Database

Problem Display
PID: 250357 (bbq5/3p2Pp/5R1K/r1Q3NN/3rP1kp/1n5p/2B5/8 w - - 0 1)

Ellerman, Arnoldo

2nd Prize, Jerusalem Post, 1950

(First published on Fri Dec 8 1950)

bbq5/3p2Pp/5R1K/r1Q3NN/3rP1kp/1n5p/2B5/8

#2

8 + 11

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Bxd1#
    • 1...Rda4
      • 2.Bd1#
    • 1...Rb4
      • 2.Bd1#
    • 1...Rc4
      • 2.Bd1#
    • 1...Rd6
      • 2.Qg1#
    • 1...Ra1
      • 2.Qf5#
    • 1...Ra2
      • 2.Qf5#
    • 1...Ra3
      • 2.Qf5#
    • 1...Raa4
      • 2.Qf5#
    • 1...Ra6
      • 2.Qf5#
    • 1...Ra7
      • 2.Qf5#
    • 1...Bf4
      • 2.Rxf4#
    • 1...Ba7
      • 2.Rf4#
    • 1...d5
      • 2.Qxc8#
    • 1...d6
      • 2.Rf4#
  • Keys
    • 1.e5!
      • threat
        • 2.Bf5#
      • 1...Rd3
        • 2.Rf4#
      • 1...Re4
        • 2.Qg1#
      • 1...Rf4
        • 2.Rxf4#
      • 1...Be4
        • 2.Rf4#
      • 1...d5
        • 2.Qxc8#
      • 1...d6
        • 2.Qxc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 13
  • Sets
    • R(c);N_GUARD::B(A),XR(c)
    • R(c);N_GUARD::B(A)
    • R(c);OGATE,P_PINR(F)::QAR(C)
    • R(f);N_GUARD::QAB1(C)
    • R(f);N_GUARD,P_PINR(F)::QAB1(C)
    • B(j);N_GUARD,P_PINS(D)::R1(F),XB(j)
    • B(j);N_GUARD::R1(F)
    • P(g);OGATEB::QAB(C),XQ(k)
    • P(g);S_CUTB(j)::R1(F)
  • Actual
    • P(B);
    • Threat
      • B(A)
    • Vars
      • R(c);N_GUARD::R1(F)
      • R(c);OGATE::QAR(C)
      • R(c);N_GUARD::R1(F),XR(c)
      • B(i);S_CUTR(c)::R1(F)
      • P(g);OGATEB::QAB(C),XQ(k)
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