MESON Chess Problem Database

Problem Display
PID: 185925 (3r4/B1pB1N2/K3pRr1/p4n1n/1pPNk3/4P2Q/4P2b/4qR1b w - - 0 1)

Ahues, Herbert Siegfried Oskar

3rd Prize, Chess, 1957

3r4/B1pB1N2/K3pRr1/p4n1n/1pPNk3/4P2Q/4P2b/4qR1b

#2

11 + 12

81 Chess 1958

SOLUTION

  • SOUND
  • Sets
    • 1...Rg2
      • 2.Qf3#
    • 1...Rg3
      • 2.Rxe6#
    • 1...Ra8
      • 2.Bc6#
    • 1...Rb8
      • 2.Bc6#
    • 1...Rc8
      • 2.Bc6#
    • 1...Re8
      • 2.Bc6#
    • 1...Rf8
      • 2.Bc6#
    • 1...Rg8
      • 2.Bc6#
    • 1...Rh8
      • 2.Bc6#
    • 1...Bf3
      • 2.Qxf3#
    • 1...Bd6
      • 2.Bc6#
    • 1...Sfg3
      • 2.Qxe6#
    • 1...Sd6
      • 2.Bc6#
    • 1...e5
      • 2.Bxf5#
  • Tries
    • 1.Qxf5+?
      • 1...Kxe3
        • 2.Qd3#
      • 1...exf5!
  • Keys
    • 1.Sb3!
      • threat
        • 2.Sc5#
      • 1...Sxe3
        • 2.Qxe3#
      • 1...Qg3
        • 2.Sd2#
      • 1...Rg3
        • 2.Rxe6#
      • 1...Bf3
        • 2.Qxf3#
      • 1...Bg3
        • 2.Qxh1#
      • 1...Bd6
        • 2.Bc6#
      • 1...Sfg3
        • 2.Qxe6#
      • 1...Shg3
        • 2.Rf4#
      • 1...c5
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 10
  • Sets
    • R(j);S_CUTB(b)::QAB1(D)
    • R(j);N_GUARD,S_CUTB(c)::R(H),XP(i)
    • R(l);N_GUARD,P_PINB(I)::B(J)
    • R(l);N_GUARD::B(J)
    • B(b);N_GUARD::QAB1(D),XB(b)
    • B(c);S_CUTR(l)::B(J)
    • S(g);OGATE::QAR2(D),XP(i)
    • S(g);S_CUTR(l)::B(J)
    • P(i);OGATE,P_PINR(H)::B(J),XS(g)
  • Tries
    • Try
      • Q(D);CHECK,XS(g)
      • Vars
        • K(e);OGATE,P-FLIGHT,XP(C)::QAR1(D)
      • Refutation
        • P(i);P_PINR(H),XQ(D)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • S(g);OGATE,XP(C)::QAR1(D),XS(g)
      • Q(a);N_GUARD::S(F)
      • R(j);N_GUARD,S_CUTB(c)::R(H),XP(i)
      • B(b);N_GUARD::QAB1(D),XB(b)
      • B(c);OGATE::QAB(D),XB(b)
      • B(c);S_CUTR(l)::B(J)
      • S(g);OGATE::QAR2(D),XP(i)
      • S(h);N_GUARD,S_CUTB(c)::R1(A)
      • P(k);::S(F),XP(k)
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