MESON Chess Problem Database

Problem Display
PID: 210436 (6bB/2p5/3p2Bp/8/1N2pk1K/2r4p/4p2r/4N1Q1 w - - 0 1)

Riczu, Lajos

Deutsche Schachblatter, 1983

6bB/2p5/3p2Bp/8/1N2pk1K/2r4p/4p2r/4N1Q1

#2

6 + 10

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Qg3#
    • 1...Rc2
      • 2.Qg3#
    • 1...Re3
      • 2.Qg4#
    • 1...Rg3
      • 2.Qxg3#
    • 1...Rc4
      • 2.Qg3#
    • 1...Rc5
      • 2.Qg3#
    • 1...Rc6
      • 2.Qg3#
    • 1...Bd5
      • 2.Sxd5#
    • 1...Bh7
      • 2.Sd5#
    • 1...e3
      • 2.Qxh2#
      • 2.Qg3#
      • 2.Qg4#
    • 1...h5
      • 2.Qg5#
  • Tries
    • 1.Sed3+?
      • 1...Kf3
        • 2.Bh5#
        • 2.Qg3#
      • 1...exd3
        • 2.Qg3#
      • 1...Rxd3!
    • 1.Sbd3+?
      • 1...exd3
        • 2.Qd4#
        • 2.Qg3#
      • 1...Rxd3!
    • 1.Qxh2+?
      • 1...Rg3
        • 2.Qxg3#
      • 1...Ke3!
  • Keys
    • 1.Qd4!
      • threat
        • 2.Qxe4#
      • 1...Re3
        • 2.Qf6#
      • 1...Rc4
        • 2.Sbd3#
      • 1...Bd5
        • 2.Sxd5#
      • 1...d5
        • 2.Be5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(c);N_GUARD::QAB1(B)
    • R(c);SBLOCK::QAR1(B)
    • R(c);N_GUARD::QAB1(B),XR(c)
    • B(j);N_GUARD::S(C),XB(j)
    • B(j);N_GUARD::S(C)
    • P(h);N_GUARD::QAB1(B)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • P(e);XS(A)::QAB1(B)
      • Refutation
        • R(c);XS(A)
    • Try
      • S(C);CHECK
      • Refutation
        • R(c);XS(C)
    • Try
      • Q(B);CHECK,XR(b)
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAB1(B),XR(c)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • Q(B);P_PINP(e)
    • Threat
      • QAR1(B),XP(e)
    • Vars
      • R(c);SBLOCK::QAR2(B)
      • R(c);N_GUARD::S(C)
      • B(j);N_GUARD::S(C),XB(j)
      • P(g);N_GUARD::B(F)
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