MESON Chess Problem Database

Problem Display
PID: 52234 (1Q4K1/2N4p/2p1B3/n1b1P2R/3pk3/7R/4p1P1/2B1nb2 w - - 0 1)

Paslack, Rainer

Probleemblad, 2004

(First published on Mon Mar 1 2004)

1Q4K1/2N4p/2p1B3/n1b1P2R/3pk3/7R/4p1P1/2B1nb2

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.R3h4#
  • Tries
    • 1.Re3+?
      • 1...Kf4
        • 2.g3#
      • 1...dxe3!
    • 1.Qb1+?
      • 1...Sd3
        • 2.R3h4#
        • 2.Qxd3#
      • 1...d3
        • 2.R3h4#
      • 1...Sc2!
    • 1.Qe8?
      • threat
        • 2.Bf5#
      • 1...d3
        • 2.R3h4#
      • 1...Be7!
    • 1.Qf8?
      • threat
        • 2.Qf4#
        • 2.Qf5#
      • 1...Sxg2
        • 2.Qf3#
        • 2.Qf5#
      • 1...Sf3
        • 2.Qxf3#
        • 2.Qf5#
      • 1...d3
        • 2.R3h4#
        • 2.Qf4#
      • 1...Sd3
        • 2.Qf3#
        • 2.Qf5#
      • 1...Bxf8!
  • Keys
    • 1.Qb5!
      • threat
        • 2.R3h4#
      • 1...Bxg2
        • 2.Qxe2#
      • 1...Sxg2
        • 2.Qd3#
      • 1...cxb5
        • 2.Bd5#
      • 1...Be7
        • 2.Bf5#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sf3
        • 2.gxf3#
      • 1...Sc4
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • P(d);SBLOCK::R(C)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(e);P-FLIGHT::P(B)
      • Refutation
        • P(d);XR(C)
    • Try
      • Q(H);CHECK
      • Vars
        • P(d);P_SPINP(d)::R(C)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • Q(H);
      • Threat
        • B(F)
      • Vars
        • P(d);SBLOCK::R(C)
      • Refutation
        • B(g);
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Refutation
        • B(g);XQ(H)
  • Actual
    • Q(H);
    • Threat
      • R(C)
    • Vars
      • B(b);N_GUARD,XP(B)::QAR2(H),XP(c)
      • S(a);N_GUARD,XP(B)::QAB1(H)
      • P(h);N_GUARD,XQ(H)::B(F)
      • B(g);::B(F)
      • S(a);N_GUARD::QAB1(H),XS(a)
      • S(a);OGATE::P(B),XS(a)
      • S(f);N_GUARD::QAB(H),XP(h)
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