MESON Chess Problem Database

Problem Display
PID: 233266 (br6/b2rp2P/P1pRP3/2B5/2B3Rp/ppk5/4Q3/1n5K w - - 0 1)

Muller, Dieter

Freie Presse, 1978

br6/b2rp2P/P1pRP3/2B5/2B3Rp/ppk5/4Q3/1n5K

#2

9 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rdb7
      • 2.Rd3#
    • 1...Rc7
      • 2.Rd3#
    • 1...Rb4
      • 2.h8Q#
      • 2.h8B#
    • 1...Rb5
      • 2.h8Q#
      • 2.h8B#
    • 1...Rb6
      • 2.h8Q#
      • 2.h8B#
    • 1...Rbb7
      • 2.h8Q#
      • 2.h8B#
    • 1...Sd2
      • 2.Qxd2#
    • 1...b2
      • 2.Qd3#
    • 1...h3
      • 2.Rg3#
  • Tries
    • 1.Bb5?
      • threat
        • 2.Bb4#
        • 2.Rc4#
      • 1...Rxb5
        • 2.Rc4#
        • 2.h8Q#
        • 2.h8B#
      • 1...Bxc5
        • 2.Rc4#
      • 1...Sd2
        • 2.Qxd2#
      • 1...b2
        • 2.Qd3#
        • 2.Qc4#
      • 1...cxb5+!
    • 1.Bxa3?
      • threat
        • 2.Qd3#
        • 2.Qb2#
      • 1...Rxd6
        • 2.Qb2#
      • 1...Sxa3
        • 2.Qd2#
      • 1...Sd2
        • 2.Qd3#
        • 2.Qxd2#
      • 1...Bd4
        • 2.Qd3#
      • 1...b2
        • 2.Qd3#
      • 1...c5+!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Rc4#
      • 1...Sd2
        • 2.Qe5#
      • 1...b2
        • 2.Qc2#
      • 1...Rb4
        • 2.Bxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • R(h);N_GUARD::R1(G)
    • R(k);N_GUARD::P=Q
    • S(a);N_GUARD::QAB1(B),XS(a)
    • P(c);SBLOCK::QAR1(B)
    • P(e);N_GUARD::R(D)
  • Tries
    • Try
      • B(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(g);XB(E)::R1(D)
        • S(a);N_GUARD::QAB1(B),XS(a)
      • Refutation
        • P(f);CHECK,XB(C)
    • Try
      • B(E);XP(b)
      • Threat
        • DUALS(2)
      • Vars
        • R(h);XR(G)::QAB1(B)
        • S(a);N_GUARD,XB(E)::QAB1(B)
        • B(g);::QAR1(B)
        • P(c);::QAR1(B)
      • Refutation
        • P(f);CHECK
  • Actual
    • B(C);
    • Threat
      • R1(D)
    • Vars
      • S(a);SBLOCK::QAB(B)
      • P(c);N_GUARD::QAR1(B)
      • R(k);N_GUARD::B(E),XR(k)
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