MESON Chess Problem Database

Problem Display
PID: 234369 (3r4/7R/pP1k4/P1Rpp2p/PK2pp2/Bp4nB/3Pnb2/1b4Q1 w - - 0 1)

Ellerman, Arnoldo

Revista Romana de Sah, 1935

3r4/7R/pP1k4/P1Rpp2p/PK2pp2/Bp4nB/3Pnb2/1b4Q1

#2

10 + 13

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd7
      • 2.Rxd7#
    • 1...Ra8
      • 2.Rd7#
    • 1...Rb8
      • 2.Rd7#
    • 1...Rc8
      • 2.Rd7#
    • 1...Re8
      • 2.Rd7#
    • 1...Rf8
      • 2.Rd7#
    • 1...Rg8
      • 2.Rd7#
    • 1...Rh8
      • 2.Rd7#
    • 1...Bxc5+
      • 2.Qxc5#
    • 1...Sf1
      • 2.Qg6#
    • 1...Sh1
      • 2.Qg6#
    • 1...Sf5
      • 2.Qg6#
  • Keys
    • 1.Rcc7!
      • threat
        • 2.Rh6#
      • 1...Bc5+
        • 2.Qxc5#
      • 1...Bxb6
        • 2.Qxb6#
      • 1...Sf5
        • 2.Qg6#
      • 1...d4
        • 2.Kc4#
      • 1...Rd7
        • 2.Rhxd7#
      • 1...Re8
        • 2.Rhd7#
      • 1...Rf8
        • 2.Rhd7#
      • 1...Rg8
        • 2.Rhd7#
      • 1...Rh8
        • 2.Rhd7#
      • 1...Sd4
        • 2.Kc3#
      • 1...e3
        • 2.Kxb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(m);N_GUARD::R1(J),XR(m)
    • R(m);N_GUARD::R1(J)
    • R(m);N_GUARD,P_PINP(I)::R1(J)
    • B(c);CHECK,OGATE,XR(H)::QAB1(A),XB(c)
    • S(e);OGATE::QAR(A)
  • Actual
    • R(H);
    • Threat
      • R(J)
    • Vars
      • B(c);CHECK,OGATE::QAB1(A),XB(c)
      • B(c);OGATE,XP(I)::QAR2(A),XB(c)
      • S(e);OGATE::QAR(A)
      • P(h);::B(C)+K(F)
      • R(m);N_GUARD::R1(J),XR(m)
      • R(m);N_GUARD::R1(J)
      • S(b);::B(C)+K(F)
      • P(f);S_CUTB(c)::B(C)+K(F),XP(d)
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