MESON Chess Problem Database

Problem Display
PID: 187190 (4R1nN/4nB1b/5p2/2K2kr1/5P1r/2Np3p/5R1B/3Q4 w - - 0 1)

Schneider, Matthias

Comm., Schach-Aktiv, 2012

4R1nN/4nB1b/5p2/2K2kr1/5P1r/2Np3p/5R1B/3Q4

#2

9 + 9

15511 harmonie-aktiv 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Rhg4
      • 2.Qxd3#
    • 1...Rgg4
      • 2.Qxd3#
    • 1...Sd5
      • 2.Be6#
    • 1...Sc6
      • 2.Be6#
    • 1...Sg6
      • 2.Be6#
    • 1...Sc8
      • 2.Be6#
  • Tries
    • 1.Re2?
      • threat
        • 2.Be6#
      • 1...Kg4+
        • 2.Re5#
      • 1...dxe2
        • 2.Qd7#
      • 1...Rg3!
    • 1.Rxe7?
      • threat
        • 2.Be6#
      • 1...Rxf4
        • 2.Rxf4#
      • 1...Sxe7!
    • 1.Qb3?
      • threat
        • 2.Be6#
        • 2.Qe6#
      • 1...Rxf4
        • 2.Qe6#
      • 1...Sd5
        • 2.Be6#
      • 1...Kg4+!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Qd7#
      • 1...Kg4+
        • 2.f5#
      • 1...Rxf4
        • 2.Qxf4#
      • 1...Sc6
        • 2.Be6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(c);SBLOCK::QAB(A),XP(a)
    • R(e);SBLOCK::QAB(A),XP(a)
    • S(g);::B(G)
  • Tries
    • Try
      • R(B);
      • Threat
        • B(G)
      • Vars
        • K(d);CHECK,S_FLIGHT::QAB(A)+R(B)
        • P(a);OGATE,XR(B)::QAB(A)
      • Refutation
        • R(e);
    • Try
      • R(H);XS(g)
      • Threat
        • B(G)
      • Vars
        • R(c);OGATE,P_SPINR(c),XP(E)::R1(B),XR(c)
      • Refutation
        • S(i);XR(H)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);P_SPINR(c),XP(E)::QAB1(A)
        • S(g);::B(G)
      • Refutation
        • K(d);CHECK,S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • K(d);CHECK,OGATE,S_FLIGHT::QAR(A)+P(E)
      • R(c);OGATE,P_SPINR(c),XP(E)::QAR1(A),XR(c)
      • S(g);::B(G)
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