MESON Chess Problem Database

Problem Display
PID: 258588 (2n5/n2B2p1/3p2Rr/2Pk1p2/1pR2P2/3Kp2p/1B6/Q3b3 w - - 0 1)

Sporing, Joachim

7/15 Comm., Deutsche Schachzeitung, 1983

2n5/n2B2p1/3p2Rr/2Pk1p2/1pR2P2/3Kp2p/1B6/Q3b3

#2

8 + 11

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bd2
      • 2.Qh1#
    • 1...Bf2
      • 2.Qh1#
    • 1...Bc3
      • 2.Qh1#
    • 1...Bg3
      • 2.Qh1#
    • 1...Bh4
      • 2.Qh1#
    • 1...Sb5
      • 2.Qa8#
    • 1...Sc6
      • 2.Be6#
  • Tries
    • 1.Bc1?
      • threat
        • 2.Qd4#
      • 1...dxc5
        • 2.Qe5#
      • 1...Sb5
        • 2.Qa8#
      • 1...Sc6
        • 2.Be6#
      • 1...Bc3!
    • 1.Ba3?
      • threat
        • 2.Qd4#
      • 1...dxc5
        • 2.Qe5#
      • 1...Bc3
        • 2.Qh1#
      • 1...Sc6
        • 2.Be6#
      • 1...Sb5!
    • 1.Be5?
      • threat
        • 2.Qd4#
      • 1...dxe5
        • 2.Qxe5#
      • 1...Bc3
        • 2.Qh1#
      • 1...Sb5
        • 2.Qa8#
      • 1...Sc6
        • 2.Be6#
      • 1...dxc5!
    • 1.Bf6?
      • threat
        • 2.Qd4#
      • 1...dxc5
        • 2.Qe5#
      • 1...Bc3
        • 2.Qh1#
      • 1...Sb5
        • 2.Qa8#
      • 1...Sc6!
    • 1.Qc1?
      • threat
        • 2.Rd4#
      • 1...dxc5
        • 2.Rxc5#
      • 1...Bc3
        • 2.Qh1#
      • 1...Sc6
        • 2.Be6#
      • 1...Sb5!
    • 1.Qa5?
      • threat
        • 2.Rd4#
      • 1...Sb5
        • 2.Qa8#
      • 1...Sc6
        • 2.Be6#
      • 1...Bc3!
    • 1.Qxa7?
      • threat
        • 2.Rd4#
        • 2.Qb7#
        • 2.Qa8#
      • 1...dxc5
        • 2.Bc6#
        • 2.Rxc5#
        • 2.Qxc5#
        • 2.Qb7#
        • 2.Qa8#
      • 1...Bc3
        • 2.Qb7#
        • 2.Qa8#
      • 1...Sb6
        • 2.Qb7#
      • 1...Se7
        • 2.Rd4#
      • 1...Sxa7!
  • Keys
    • 1.Bxg7!
      • threat
        • 2.Qd4#
      • 1...dxc5
        • 2.Qe5#
      • 1...Bc3
        • 2.Qh1#
      • 1...Sb5
        • 2.Qa8#
      • 1...Sc6
        • 2.Be6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • B(a);OGATE::QAB(A)
    • S(i);OGATE::QAB(A)
    • S(i);SBLOCK::B(H)
  • Tries
    • Try
      • B(B);
      • Threat
        • QAR1(A)
      • Vars
        • P(g);N_GUARD,XP(F)::QAR1(A)
        • S(i);OGATE::QAB(A)
        • S(i);SBLOCK::B(H)
      • Refutation
        • B(a);
    • Try
      • B(B);
      • Threat
        • QAR1(A)
      • Vars
        • P(g);N_GUARD,XP(F)::QAR1(A)
        • B(a);OGATE::QAB(A)
        • S(i);SBLOCK::B(H)
      • Refutation
        • S(i);
    • Try
      • B(B);
      • Threat
        • QAR1(A)
      • Vars
        • P(g);OGATE,XB(B)::QAR1(A),XP(g)
        • B(a);OGATE::QAB(A)
        • S(i);OGATE::QAB(A)
        • S(i);SBLOCK::B(H)
      • Refutation
        • P(g);XP(F)
    • Try
      • B(B);
      • Threat
        • QAR1(A)
      • Vars
        • P(g);N_GUARD,XP(F)::QAR1(A)
        • B(a);OGATE::QAB(A)
        • S(i);OGATE::QAB(A)
      • Refutation
        • S(i);
    • Try
      • Q(A);
      • Threat
        • R1(D)
      • Vars
        • P(g);OGATE,XP(F)::R1(D),XP(g)
        • B(a);OGATE::QAB(A)
        • S(i);SBLOCK::B(H)
      • Refutation
        • S(i);
    • Try
      • Q(A);
      • Threat
        • R1(D)
      • Vars
        • S(i);OGATE::QAB(A)
        • S(i);SBLOCK::B(H)
      • Refutation
        • B(a);
    • Try
      • Q(A);XS(i)
      • Threat
        • DUALS(3)
      • Vars
        • S(k);::QAB(A)
        • S(k);::R1(D)
      • Refutation
        • S(k);XQ(A)
  • Actual
    • B(B);XP(j)
    • Threat
      • QAR1(A)
    • Vars
      • P(g);N_GUARD,XP(F)::QAR1(A)
      • B(a);OGATE::QAB(A)
      • S(i);OGATE::QAB(A)
      • S(i);SBLOCK::B(H)
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