MESON Chess Problem Database

Problem Display
PID: 252919 (8/b3p3/bQ6/qR2p3/1p6/p3pN2/BpR1p2K/1r1kN3 w - - 0 1)

Sydenham, Colin Peter

Schach-Aktiv, 1995

8/b3p3/bQ6/qR2p3/1p6/p3pN2/BpR1p2K/1r1kN3

#2

7 + 12

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Bb3?
      • threat
        • 2.Rc3#
        • 2.Rc4#
        • 2.Rcc5#
        • 2.Rc6#
        • 2.Rc7#
        • 2.Rc8#
      • 1...Rc1
        • 2.Rd2#
      • 1...Bc8
        • 2.Rc3#
        • 2.Rc4#
        • 2.Rcc5#
        • 2.Rc6#
        • 2.Rc7#
        • 2.Rxc8#
      • 1...Qa4!
    • 1.Rd2+?
      • 1...Kc1
        • 2.Sd3#
      • 1...exd2!
    • 1.Rc4?
      • threat
        • 2.Bb3#
      • 1...Qa4
        • 2.Rd5#
      • 1...b3
        • 2.Bxb3#
      • 1...Rc1!
    • 1.Rc7?
      • threat
        • 2.Bb3#
      • 1...Rc1
        • 2.Rd7#
      • 1...b3
        • 2.Bxb3#
      • 1...Qa4!
    • 1.Rd5+?
      • 1...Bd3
        • 2.Rxd3#
      • 1...Qxd5!
    • 1.Qxe3?
      • threat
        • 2.Qd2#
        • 2.Qxe2#
        • 2.Qd3#
      • 1...Qxb5
        • 2.Qd2#
      • 1...Bxb5
        • 2.Qd2#
      • 1...Qd8
        • 2.Qxe2#
      • 1...b3
        • 2.Qxe2#
      • 1...e4
        • 2.Qd2#
        • 2.Qxe2#
      • 1...Bxe3!
  • Keys
    • 1.Rcc5!
      • threat
        • 2.Bb3#
      • 1...Qa4
        • 2.Qd8#
      • 1...Rc1
        • 2.Rd5#
      • 1...b3
        • 2.Bxb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);
      • Threat
        • DUALS(6)
      • Vars
        • R(a);SBLOCK::B(B)+R(C),DCHECK
      • Refutation
        • Q(h);
    • Try
      • R(C);CHECK
      • Vars
        • K(b);P-FLIGHT,S_CUTP(f)::S(A)
      • Refutation
        • P(f);XR(C)
    • Try
      • R(C);
      • Threat
        • B(B)
      • Vars
        • Q(h);N_GUARD::R(F)
        • P(g);::B(B),XP(g)
      • Refutation
        • R(a);
    • Try
      • R(C);
      • Threat
        • B(B)
      • Vars
        • R(a);SBLOCK::R(C)
        • P(g);::B(B),XP(g)
      • Refutation
        • Q(h);
    • Try
      • R(F);CHECK
      • Vars
        • B(j);N_GUARD,P_SPINB(j)::R(F),XB(j)
      • Refutation
        • Q(h);XR(F)
    • Try
      • Q(G);XP(f)
      • Threat
        • DUALS(3)
      • Vars
        • Q(h);XR(F)::QAR1(G)
        • B(j);XR(F)::QAR1(G)
        • Q(h);::QAB1(G),XP(d)
        • P(g);::QAB1(G),XP(d)
      • Refutation
        • B(k);XQ(G)
  • Actual
    • R(C);
    • Threat
      • B(B)
    • Vars
      • Q(h);N_GUARD::QAB(G)
      • R(a);SBLOCK::R(C)
      • P(g);::B(B),XP(g)
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