MESON Chess Problem Database

Problem Display
PID: 59345 (q7/1b2R1R1/P3Np2/2P1Bk2/1K1P1br1/2NP2rB/4P3/1Q6 w - - 0 1)

Ellerman, Arnoldo

6th HM., Brisbane Courier, 1922

q7/1b2R1R1/P3Np2/2P1Bk2/1K1P1br1/2NP2rB/4P3/1Q6

#2

13 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd3
      • 2.Bxg4#
    • 1...Re3
      • 2.Bxg4#
    • 1...Rf3
      • 2.Bxg4#
  • Keys
    • 1.d5!
      • threat
        • 2.Sd4#
      • 1...Be3+
        • 2.d4#
      • 1...Bxe5+
        • 2.e4#
      • 1...Kxe5
        • 2.d4#
      • 1...fxe5
        • 2.Ref7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(a);N_GUARD,N_SPINR(c),P_SPINR(a),XP(D)::B(E),XR(c)
    • R(a);N_GUARD::B(E),XR(c)
  • Actual
    • P(G);
    • Threat
      • S(K)
    • Vars
      • B(b);CHECK,S_CUTR(a)::QAB(A)+P(D)
      • B(b);CHECK,SBLOCK,XB(I)::P(B)
      • K(d);N_SPINR(c),P-FLIGHT,XB(I)::P(D)
      • P(e);OGATEB,SBLOCK,XB(I)::R(L)
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