MESON Chess Problem Database

Problem Display
PID: 242652 (3R2K1/3b1QpP/1n1P2RB/N1N1kp2/1P6/3p3p/4PPn1/3r3B w - - 0 1)

Gockel, Hubert

Deutsche Schachzeitung, 1982

3R2K1/3b1QpP/1n1P2RB/N1N1kp2/1P6/3p3p/4PPn1/3r3B

#2

13 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Bxg7#
    • 1...Bc6
      • 2.Sxc6#
    • 1...Bc8
      • 2.Sc6#
    • 1...Se1
      • 2.Qxg7#
    • 1...Se3
      • 2.Qxg7#
    • 1...Sf4
      • 2.Bxg7#
      • 2.Qxg7#
    • 1...Sh4
      • 2.Qxg7#
    • 1...f4
      • 2.Bxg7#
  • Tries
    • 1.Sc4+?
      • 1...Kd4
        • 2.Bxg7#
      • 1...Sxc4!
    • 1.Rxd7?
      • threat
        • 2.Sc6#
      • 1...Kd4
        • 2.Bxg7#
      • 1...gxh6!
    • 1.Qc4?
      • threat
        • 2.Bxg7#
      • 1...Be6+
        • 2.Rxe6#
      • 1...gxh6
        • 2.h8Q#
        • 2.h8B#
      • 1...f4
        • 2.Qe4#
      • 1...Sd5
        • 2.Sxd7#
      • 1...Sxc4!
    • 1.Qe6+?
      • 1...Kd4
        • 2.Bxg7#
      • 1...Bxe6+!
    • 1.e4?
      • threat
        • 2.Qxg7#
      • 1...Kd4
        • 2.Bxg7#
        • 2.Qxg7#
      • 1...fxe4
        • 2.Bxg7#
      • 1...Be6
        • 2.Sc6#
      • 1...Sd5
        • 2.Qxd5#
      • 1...gxh6!
    • 1.f4+?
      • 1...Sxf4
        • 2.Bxg7#
        • 2.Qxg7#
      • 1...Kd4!
  • Keys
    • 1.e3!
      • threat
        • 2.Bxg7#
      • 1...Sxe3
        • 2.Qxg7#
      • 1...gxh6
        • 2.h8Q#
        • 2.h8B#
      • 1...Be6
        • 2.Qxe6#
      • 1...Sd5
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • K(e);S_FLIGHT::B(I),XP(i)
    • B(h);N_GUARD::S(E),XB(h)
    • B(h);N_GUARD::S(E)
    • S(b);::QAB(J),XP(i)
    • P(f);::B(I),XP(i)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(e);S_FLIGHT::B(I),XP(i)
      • Refutation
        • S(g);XS(E)
    • Try
      • R(L);XB(h)
      • Threat
        • S(E)
      • Vars
        • K(e);S_FLIGHT::B(I),XP(i)
      • Refutation
        • P(i);XB(I)
    • Try
      • Q(J);
      • Threat
        • B(I),XP(i)
      • Vars
        • B(h);CHECK,N_GUARD::R1(H),XB(h)
        • P(i);XB(I)::P=Q
        • P(f);N_GUARD::QAR1(J)
        • S(g);N_GUARD::S(F),XB(h)
      • Refutation
        • S(g);XQ(J)
    • Try
      • Q(J);CHECK
      • Vars
        • K(e);S_FLIGHT::B(I),XP(i)
      • Refutation
        • B(h);CHECK,XQ(J)
    • Try
      • P(B);
      • Threat
        • QAB(J),XP(i)
      • Vars
        • P(f);XP(B)::B(I),XP(i)
        • B(h);N_GUARD,P_PINQ(J)::S(E)
        • S(g);N_GUARD::QAR1(J),XS(g)
      • Refutation
        • P(i);XB(I)
    • Try
      • P(C);CHECK
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • P(B);
    • Threat
      • B(I),XP(i)
    • Vars
      • S(b);XP(B)::QAB(J),XP(i)
      • P(i);XB(I)::P=Q
      • B(h);N_GUARD,P_PINQ(J)::QAR1(J),XB(h)
      • S(g);N_GUARD::S(E)
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