MESON Chess Problem Database

Problem Display
PID: 233499 (1r3R1b/3N4/1n3pN1/1Q4p1/1n2k1r1/2P5/3P2P1/2BK4 w - - 0 1)

Supp, Walter

Freie Presse, 1995

1r3R1b/3N4/1n3pN1/1Q4p1/1n2k1r1/2P5/3P2P1/2BK4

#2

9 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rb7
      • 2.Re8#
    • 1...Re8
      • 2.Rxe8#
    • 1...Sa2
      • 2.d3#
    • 1...Sc2
      • 2.d3#
    • 1...S4d5
      • 2.Qb1#
    • 1...Sa6
      • 2.d3#
    • 1...Sc6
      • 2.d3#
    • 1...f5
      • 2.Qxf5#
  • Tries
    • 1.Rxf6?
      • threat
        • 2.Qf5#
      • 1...Bxf6
        • 2.Sxf6#
      • 1...S4d5
        • 2.Sc5#
        • 2.Qb1#
        • 2.d3#
      • 1...S6d5
        • 2.Sc5#
        • 2.Qc4#
      • 1...Rf4!
    • 1.Qc4+?
      • 1...Kf5
        • 2.Se7#
      • 1...Sxc4!
    • 1.Qe5+?
      • 1...Kd3
        • 2.Qe2#
      • 1...fxe5!
  • Keys
    • 1.Se7!
      • threat
        • 2.Qf5#
      • 1...Kf4
        • 2.Qe5#
      • 1...Rf4
        • 2.Qe2#
      • 1...S4d5
        • 2.d3#
      • 1...S6d5
        • 2.Qc4#
      • 1...f5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(g);N_GUARD::R(I)
    • R(g);N_GUARD::R(I),XR(g)
    • S(a);N_GUARD::P(C)
    • S(a);OGATE,SBLOCK::QAB(F)
    • P(f);::QAB1(F),XP(f)
  • Tries
    • Try
      • R(I);XP(f)
      • Threat
        • QAB1(F)
      • Vars
        • B(h);XR(I)::S(H),XB(h)
      • Refutation
        • R(c);
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);P_SPINP(f),S_FLIGHT::S(G)
      • Refutation
        • S(e);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(F)
      • Refutation
        • P(f);XQ(F)
  • Actual
    • S(G);
    • Threat
      • QAB1(F)
    • Vars
      • K(b);P-FLIGHT,P_SPINP(f)::QAB1(F)
      • R(c);SBLOCK::QAR2(F)
      • S(a);N_GUARD::P(C)
      • S(e);N_GUARD::QAR2(F)
      • P(f);::QAB1(F),XP(f)
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