MESON Chess Problem Database

Problem Display
PID: 233205 (5RK1/2NPBB2/p2P4/Rq2k1p1/3p2P1/5P2/4N3/7b w - - 0 1)

Lindner, Erich

Freie Presse, 1972

5RK1/2NPBB2/p2P4/Rq2k1p1/3p2P1/5P2/4N3/7b

#2

11 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.Rxc5#
    • 1...Qd5
      • 2.Rxd5#
  • Tries
    • 1.Sxb5?
      • threat
        • 2.Sa3#
        • 2.Sbc3#
        • 2.Sbxd4#
        • 2.Sa7#
        • 2.Sc7#
      • 1...axb5
        • 2.Rxb5#
      • 1...d3
        • 2.Sa3#
        • 2.Sbc3#
        • 2.Sbd4#
        • 2.Sa7#
        • 2.Sc7#
      • 1...Bxf3!
    • 1.Ba2?
      • threat
        • 2.Rf5#
      • 1...Qd5+
        • 2.Rxd5#
      • 1...Bxf3!
    • 1.Bb3?
      • threat
        • 2.Rf5#
      • 1...Qd5+
        • 2.Rxd5#
      • 1...Bxf3!
    • 1.Bc4?
      • threat
        • 2.Rf5#
      • 1...Qd5+
        • 2.Rxd5#
      • 1...Bxf3!
    • 1.Bh5?
      • threat
        • 2.Rf5#
      • 1...Qd5+
        • 2.Rxd5#
      • 1...Bxf3!
    • 1.Bg6?
      • threat
        • 2.Rf5#
      • 1...Qd5+
        • 2.Rxd5#
      • 1...Bxf3!
    • 1.Be8?
      • threat
        • 2.Rf5#
      • 1...Qd5+
        • 2.Rxd5#
      • 1...Bxf3!
  • Keys
    • 1.Bd5!
      • threat
        • 2.Rf5#
      • 1...Qxd5+
        • 2.Rxd5#
      • 1...Qxd7
        • 2.Bc6#
      • 1...Qd3
        • 2.Bc4#
      • 1...Qb1
        • 2.Bb3#
      • 1...Qb8
        • 2.Bb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • Q(c);OGATE::R(D),XQ(c)
    • Q(c);OGATE,P_PINB(I)::R1(D),XQ(c)
  • Tries
    • Try
      • S(F);XQ(c)
      • Threat
        • DUALS(5)
      • Vars
        • P(f);OGATE,P_SPINP(f),XS(F)::R(D),XP(f)
      • Refutation
        • B(a);XP(B)
    • Try
      • B(I);
      • Threat
        • R1(J)
      • Vars
        • Q(c);CHECK,OGATE::R1(D),XQ(c)
      • Refutation
        • B(a);XP(B)
    • Try
      • B(I);
      • Threat
        • R1(J)
      • Vars
        • Q(c);CHECK,OGATE::R1(D),XQ(c)
      • Refutation
        • B(a);XP(B)
    • Try
      • B(I);
      • Threat
        • R1(J)
      • Vars
        • Q(c);CHECK,OGATE::R1(D),XQ(c)
      • Refutation
        • B(a);XP(B)
    • Try
      • B(I);
      • Threat
        • R1(J)
      • Vars
        • Q(c);CHECK,OGATE::R1(D),XQ(c)
      • Refutation
        • B(a);XP(B)
    • Try
      • B(I);
      • Threat
        • R1(J)
      • Vars
        • Q(c);CHECK,OGATE::R1(D),XQ(c)
      • Refutation
        • B(a);XP(B)
    • Try
      • B(I);
      • Threat
        • R1(J)
      • Vars
        • Q(c);CHECK,OGATE::R1(D),XQ(c)
      • Refutation
        • B(a);XP(B)
  • Actual
    • B(I);N_PINQ(c)
    • Threat
      • R1(J)
    • Vars
      • Q(c);CHECK,OGATE,P_SPINQ(c),XB(I)::R1(D),XQ(c)
      • Q(c);OGATEB,XP(G)::R(D)+B(I)
      • Q(c);OGATEB::R(D)+B(I)
      • Q(c);OGATEB,P_PINR(J)::R(D)+B(I)
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