MESON Chess Problem Database

Problem Display
PID: 240592 (2b1Rn2/B3rP2/8/n7/2p1R2N/2p1KP1p/2P1B2p/6kr w - - 0 1)

Ellerman, Arnoldo

Shakhmaty i Shashki, 1932

2b1Rn2/B3rP2/8/n7/2p1R2N/2p1KP1p/2P1B2p/6kr

#2

9 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe4+
      • 2.Kxe4#
    • 1...Rd7
      • 2.Rg4#
    • 1...Rxe8
      • 2.Kf4#
    • 1...Bb7
      • 2.Kf4#
    • 1...Bd7
      • 2.Kf4#
    • 1...Se6
      • 2.Rg4#
    • 1...Sd7
      • 2.Rg8#
  • Keys
    • 1.Rd8!
      • threat
        • 2.Rd1#
      • 1...Rxe4+
        • 2.Kxe4#
      • 1...Rd7
        • 2.Rg4#
      • 1...Bd7
        • 2.Kf4#
      • 1...Sd7
        • 2.Rg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • R(h);CHECK,XR(E)::B(G)+K(C),XR(h)
    • R(h);N_PINR(E)::R(E)
    • R(h);N_GUARD,XR(I)::B(G)+K(C)
    • B(i);S_CUTR(h)::B(G)+K(C)
    • S(j);N_PINR(E)::R(E)
    • S(j);OGATE::R(I)
  • Actual
    • R(I);
    • Threat
      • R(I)
    • Vars
      • R(h);CHECK,XR(E)::B(G)+K(C),XR(h)
      • R(h);N_PINR(E)::R(E)
      • B(i);S_CUTR(h)::B(G)+K(C)
      • S(j);OGATE::R(I)
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