MESON Chess Problem Database

Problem Display
PID: 139824 (2bb2r1/7B/1p4rB/1Rp5/n3p3/K7/2kP1P1R/1N3Q2 w - - 0 1)

Wynne, RL

The Problemist, 1937

2bb2r1/7B/1p4rB/1Rp5/n3p3/K7/2kP1P1R/1N3Q2

#2

9 + 9

6388 ChessMoves 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Bxe4#
    • 1...Rg2
      • 2.Bxe4#
    • 1...Rg5
      • 2.Bxe4#
    • 1...Rc6
      • 2.Bxe4#
    • 1...Rf6
      • 2.Bxe4#
    • 1...Rxh6
      • 2.Bxe4#
    • 1...R6g7
      • 2.Bxe4#
    • 1...Sb2
      • 2.Rxb2#
    • 1...Sc3
      • 2.Rb2#
  • Keys
    • 1.d4!
      • threat
        • 2.Qe2#
      • 1...Rg3+
        • 2.fxg3#
      • 1...Rxh6
        • 2.Bxe4#
      • 1...exd4 ep
        • 2.Qc1#
      • 1...Rg5
        • 2.Bxe4#
      • 1...Bg4
        • 2.f3#
      • 1...Bg5
        • 2.f4#
      • 1...Sb2
        • 2.Rxb2#
      • 1...Sc3
        • 2.Rb2#
      • 1...e3
        • 2.fxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • R(f);OGATE,P_SPINP(c)::B(I),XP(c)
    • R(f);OGATE,P_SPINP(c),XB(H)::B(I),XP(c)
    • S(b);N_GUARD::R1(G),XS(b)
    • S(b);N_GUARD::R1(G)
  • Actual
    • P(C);
    • Threat
      • QAR2(B)
    • Vars
      • R(f);CHECK,OGATE,P_SPINP(c)::R(E)+P(D),XR(f)
      • R(f);OGATE,P_SPINP(c),XB(H)::B(I),XP(c)
      • P(c);EP,XP(C)::QAR1(B)
      • R(f);OGATE,P_SPINP(c)::B(I),XP(c)
      • B(g);S_CUTR(f)::R(E)+P(D)
      • B(h);S_CUTR(f)::R(E)+P(D)
      • S(b);N_GUARD::R1(G),XS(b)
      • S(b);N_GUARD::R1(G)
      • P(c);OGATE,P_SPINR(f)::R(E)+P(D),XP(c)
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