MESON Chess Problem Database

Problem Display
PID: 49201 (3R3b/4N3/4r3/1q1p3B/R1P1kP2/1b2p3/2n1N1PB/3Q1Kn1 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Schach-Express, 1949

3R3b/4N3/4r3/1q1p3B/R1P1kP2/1b2p3/2n1N1PB/3Q1Kn1

#2

11 + 9

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qxa4
      • 2.Qxd5#
    • 1...Qxc4
      • 2.Qxd5#
    • 1...Qa6
      • 2.Qxd5#
    • 1...Qe8
      • 2.Qxd5#
    • 1...Qb4
      • 2.Qxd5#
    • 1...Qb6
      • 2.Qxd5#
    • 1...Qb8
      • 2.Qxd5#
    • 1...Re5
      • 2.Sc3#
    • 1...Rf6
      • 2.Sc3#
    • 1...Rg6
      • 2.Bxg6#
    • 1...Rxe7
      • 2.Bg6#
    • 1...Ba2
      • 2.Qxc2#
    • 1...Bxc4
      • 2.Qxc2#
    • 1...Bc3
      • 2.Sxc3#
    • 1...Bf6
      • 2.Bg6#
    • 1...Sxe2
      • 2.Bf3#
    • 1...Sf3
      • 2.Bxf3#
      • 2.gxf3#
    • 1...Sh3
      • 2.Bf3#
    • 1...Sd4
      • 2.Sc3#
    • 1...dxc4
      • 2.Qd3#
  • Tries
    • 1.Kxg1?
      • threat
        • 2.Bf3#
      • 1...Rxe7
        • 2.Bg6#
      • 1...Sd4
        • 2.Sc3#
      • 1...Se1!
    • 1.cxb5+?
      • 1...Bxa4
        • 2.Qxd5#
      • 1...Bc4
        • 2.Qxc2#
        • 2.Qxd5#
      • 1...Bd4
        • 2.Sc3#
      • 1...Sd4
        • 2.Sc3#
      • 1...d4
        • 2.Sc3#
      • 1...Sb4!
  • Keys
    • 1.Rf8!
      • threat
        • 2.Sg3#
      • 1...Qxc4
        • 2.Qxd5#
      • 1...Bxc4
        • 2.Qxc2#
      • 1...Sxe2
        • 2.Bf3#
      • 1...Rf6
        • 2.Sc3#
      • 1...Rg6
        • 2.Bxg6#
      • 1...Bf6
        • 2.Bg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 13
  • Sets
    • Q(f);N_GUARD,XR(F)::QAB1(A),XP(g)
    • Q(f);N_GUARD,P_PINS(C),P_SPINQ(f),XP(G)::QAB1(A),XP(g)
    • Q(f);N_GUARD::QAB1(A),XP(g)
    • R(h);S_CUTB(i)::S(C)
    • R(h);P_PINP(H),S_CUTB(i)::S(C)
    • R(h);N_GUARD::B(I),XR(h)
    • R(h);N_GUARD,XS(J)::B(I)
    • B(c);N_GUARD::QAB(A),XS(b)
    • B(c);N_GUARD,P_PINS(C),P_SPINB(c),XP(G)::QAB(A),XS(b)
    • B(i);N_GUARD::S(C),XB(i)
    • B(i);S_CUTR(h)::B(I)
    • S(a);N_GUARD,XS(C)::B(I)
    • S(a);N_GUARD::B(I)
    • S(b);S_CUTB(i)::S(C)
    • P(g);P_SPINP(g),XP(G)::QAB1(A)
  • Tries
    • Try
      • K(B);P-FLIGHT,XS(a)
      • Threat
        • B(I)
      • Vars
        • R(h);N_GUARD,XS(J)::B(I)
        • S(b);S_CUTB(i)::S(C)
      • Refutation
        • S(b);
    • Try
      • P(G);CHECK,XQ(f)
      • Vars
        • B(c);XR(F)::QAB1(A),XP(g)
        • B(i);P_SPINB(i)::S(C)
        • S(b);P_SPINS(b)::S(C)
        • P(g);P_SPINP(g)::S(C)
      • Refutation
        • S(b);P_SPINS(b)
  • Actual
    • R(K);
    • Threat
      • S(C)
    • Vars
      • Q(f);N_GUARD,P_PINS(C),P_SPINQ(f),XP(G)::QAB1(A),XP(g)
      • B(c);N_GUARD,P_PINS(C),P_SPINB(c),XP(G)::QAB(A),XS(b)
      • S(a);N_GUARD,XS(C)::B(I)
      • R(h);P_PINP(H),S_CUTB(i)::S(C)
      • R(h);N_GUARD::B(I),XR(h)
      • B(i);S_CUTR(h)::B(I)
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