MESON Chess Problem Database

Problem Display
PID: 232552 (4r3/1pQ1p2p/8/3pN1pB/4k3/2R3pn/3PNb2/1K5b w - - 0 1)

Gruber, Lutz-Dieter

Freie Presse, 1987

4r3/1pQ1p2p/8/3pN1pB/4k3/2R3pn/3PNb2/1K5b

#2

7 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...h6
      • 2.Bg6#
  • Tries
    • 1.Sxg3+?
      • 1...Kd4
        • 2.Rd3#
      • 1...Kf4
        • 2.Sd3#
        • 2.Sg6#
      • 1...Bxg3!
    • 1.Sd3?
      • threat
        • 2.Qe5#
      • 1...Kf5
        • 2.Qe5#
      • 1...Bd4
        • 2.Sxg3#
      • 1...e5
        • 2.Qxh7#
      • 1...g4!
    • 1.Sf3?
      • threat
        • 2.Qe5#
      • 1...Kf5
        • 2.Qe5#
      • 1...Bd4
        • 2.Sxg3#
      • 1...e5
        • 2.Qxh7#
      • 1...Bxf3!
    • 1.Sc4?
      • threat
        • 2.Qe5#
      • 1...Kf5
        • 2.Qe5#
      • 1...Bd4
        • 2.Sxg3#
      • 1...e5
        • 2.Sd6#
        • 2.Qxh7#
      • 1...dxc4!
    • 1.Sg4?
      • threat
        • 2.Qe5#
      • 1...Kf5
        • 2.Qe5#
      • 1...Bd4
        • 2.Sxg3#
      • 1...e5
        • 2.Qxh7#
      • 1...Be3!
    • 1.Sc6?
      • threat
        • 2.Qe5#
      • 1...Kf5
        • 2.Qe5#
      • 1...Bd4
        • 2.Sxg3#
      • 1...e5
        • 2.Qxh7#
      • 1...bxc6!
    • 1.Sg6?
      • threat
        • 2.Qe5#
      • 1...Kf5
        • 2.Qe5#
      • 1...hxg6
        • 2.Bxg6#
      • 1...Bd4
        • 2.Sxg3#
      • 1...e5!
    • 1.Sd7?
      • threat
        • 2.Qe5#
      • 1...Kf5
        • 2.Qe5#
      • 1...Bd4
        • 2.Sxg3#
      • 1...e5!
  • Keys
    • 1.Sf7!
      • threat
        • 2.Qe5#
      • 1...Kf5
        • 2.Qe5#
      • 1...e5
        • 2.Sd6#
      • 1...Bd4
        • 2.Sxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(j);N_GUARD::B(F)
  • Tries
    • Try
      • S(C);CHECK,XP(c)
      • Vars
        • K(e);P-FLIGHT::R1(D)
      • Refutation
        • B(b);XS(C)
    • Try
      • S(E);
      • Threat
        • QAR1(G)
      • Vars
        • K(e);S_FLIGHT::QAR1(G)
        • B(b);N_GUARD,SBLOCK::S(C),XP(c)
        • P(i);OGATE::QAB(G),XP(j)
      • Refutation
        • P(g);
    • Try
      • S(E);
      • Threat
        • QAR1(G)
      • Vars
        • K(e);S_FLIGHT::QAR1(G)
        • B(b);N_GUARD::S(C),XP(c)
        • P(i);OGATE::QAB(G),XP(j)
      • Refutation
        • B(a);XS(E)
    • Try
      • S(E);
      • Threat
        • QAR1(G)
      • Vars
        • K(e);S_FLIGHT::QAR1(G)
        • B(b);N_GUARD,SBLOCK::S(C),XP(c)
      • Refutation
        • P(f);XS(E)
    • Try
      • S(E);
      • Threat
        • QAR1(G)
      • Vars
        • K(e);S_FLIGHT::QAR1(G)
        • B(b);N_GUARD,SBLOCK::S(C),XP(c)
        • P(i);OGATE::QAB(G),XP(j)
      • Refutation
        • B(b);
    • Try
      • S(E);
      • Threat
        • QAR1(G)
      • Vars
        • K(e);S_FLIGHT::QAR1(G)
        • B(b);N_GUARD::S(C),XP(c)
        • P(i);OGATE::QAB(G),XP(j)
      • Refutation
        • P(h);XS(E)
    • Try
      • S(E);
      • Threat
        • QAR1(G)
      • Vars
        • K(e);S_FLIGHT::QAR1(G)
        • P(j);OGATE,XS(E)::B(F),XP(j)
        • B(b);N_GUARD,SBLOCK::S(C),XP(c)
      • Refutation
        • P(i);
    • Try
      • S(E);
      • Threat
        • QAR1(G)
      • Vars
        • K(e);S_FLIGHT::QAR1(G)
        • B(b);N_GUARD,SBLOCK::S(C),XP(c)
      • Refutation
        • P(i);
  • Actual
    • S(E);
    • Threat
      • QAR1(G)
    • Vars
      • K(e);S_FLIGHT::QAR1(G)
      • P(i);N_GUARD,SBLOCK::S(E)
      • B(b);N_GUARD,SBLOCK::S(C),XP(c)
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