MESON Chess Problem Database

Problem Display
PID: 95405 (4R2B/3R3b/Nn1p3r/pBPk3r/3pnp2/2p2Q2/2K1Np1q/4b3 w - - 0 1)

Mira-Kraft, Edwin

Rhein-Neckar-Zeitung, 2000

4R2B/3R3b/Nn1p3r/pBPk3r/3pnp2/2p2Q2/2K1Np1q/4b3

#2

9 + 14

15391 Problemschach-Jahrbuch (2000) 2001
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Sxf4#
    • 1...Qh1
      • 2.Sxf4#
    • 1...Qg2
      • 2.Sxf4#
    • 1...Qh3
      • 2.Sxf4#
    • 1...Rh3
      • 2.Re5#
    • 1...Rh4
      • 2.Re5#
    • 1...Re5
      • 2.Rxe5#
    • 1...Rf5
      • 2.Qxe4#
    • 1...Rg6
      • 2.Qxe4#
    • 1...Bf5
      • 2.Re5#
    • 1...Bg6
      • 2.Rxd6#
    • 1...Bg8
      • 2.Qxe4#
    • 1...d3+
      • 2.Qxd3#
  • Tries
    • 1.Sxc3+?
      • 1...dxc3
        • 2.Qd3#
      • 1...Bxc3!
    • 1.Bc6+?
      • 1...Kc4
        • 2.Qd3#
      • 1...Kxc6!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qxd4#
      • 1...Sxc5
        • 2.Sc7#
      • 1...Sd2
        • 2.Sxc3#
      • 1...Sg3
        • 2.Sxf4#
      • 1...Sg5
        • 2.Re5#
      • 1...Sf6
        • 2.Rxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 13
  • Sets
    • Q(c);N_GUARD::S(B),XP(g)
    • R(j);N_GUARD::R1(H)
    • R(j);N_GUARD::R1(H),XR(j)
    • R(j);S_CUTB(n)::QAB1(C),XS(f)
    • R(m);S_CUTB(n)::QAB1(C),XS(f)
    • B(n);S_CUTR(j)::R1(H)
    • B(n);S_CUTR(m)::R1(G),XP(l)
    • B(n);N_GUARD::QAB1(C),XS(f)
    • P(e);CHECK,OGATEB::QAR2(C),XP(e)
  • Tries
    • Try
      • S(B);CHECK,XP(d)
      • Vars
        • P(e);S_CUTB(a),XS(B)::QAR2(C)
      • Refutation
        • B(a);XS(B)
    • Try
      • B(D);CHECK
      • Vars
        • K(i);N_SPINP(l),N_SPINS(f),S_FLIGHT::QAB1(C)
      • Refutation
        • K(i);N_SPINP(l),S_FLIGHT,XB(D)
  • Actual
    • Q(C);N_PINP(l),N_PINS(f),P_PINP(e)
    • Threat
      • QAR1(C),XP(e)
    • Vars
      • S(f);P_PINQ(C),SBLOCK,XP(E)::S(F)
      • S(f);N_GUARD,P_PINQ(C),S_CUTB(a)::S(B),XP(d)
      • S(f);P_PINQ(C),S_CUTQ(c)::S(B),XP(g)
      • S(f);P_PINQ(C),S_CUTR(j)::R1(H)
      • S(f);N_GUARD,P_PINQ(C),S_CUTR(m)::R1(G),XP(l)
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