MESON Chess Problem Database

Problem Display
PID: 12133 (b2q1nQ1/1B5p/1p6/3pP3/1BpN2R1/3kP3/3p1RN1/1Kb5 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Main-Post, 1975

b2q1nQ1/1B5p/1p6/3pP3/1BpN2R1/3kP3/3p1RN1/1Kb5

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bb2
      • 2.Rxd2#
    • 1...Ba3
      • 2.Rxd2#
    • 1...Se6
      • 2.Qxh7#
    • 1...Sd7
      • 2.Qxh7#
  • Tries
    • 1.Se2?
      • threat
        • 2.Rd4#
      • 1...Qh4
        • 2.Qxd5#
      • 1...Se6
        • 2.Qxh7#
      • 1...d4
        • 2.Sef4#
      • 1...Bb2!
    • 1.Sb3?
      • threat
        • 2.Rd4#
      • 1...Qh4
        • 2.Qxd5#
      • 1...Bb2
        • 2.Rxd2#
      • 1...Se6
        • 2.Qxh7#
      • 1...d4!
    • 1.Sf3?
      • threat
        • 2.Rd4#
      • 1...Qh4
        • 2.Qxd5#
      • 1...Bb2
        • 2.Rxd2#
      • 1...Se6
        • 2.Qxh7#
      • 1...d4!
    • 1.Sb5?
      • threat
        • 2.Rd4#
      • 1...Qh4
        • 2.Qxd5#
      • 1...Bb2
        • 2.Rxd2#
      • 1...Se6
        • 2.Qxh7#
      • 1...d4!
    • 1.Sf5?
      • threat
        • 2.Rd4#
      • 1...d4
        • 2.Sf4#
      • 1...Qh4
        • 2.Qxd5#
      • 1...Bb2
        • 2.Rxd2#
      • 1...Se6!
    • 1.Sc6?
      • threat
        • 2.Rd4#
      • 1...Qh4
        • 2.Qxd5#
      • 1...Bb2
        • 2.Rxd2#
      • 1...Se6
        • 2.Qxh7#
      • 1...d4!
    • 1.Se6?
      • threat
        • 2.Rd4#
      • 1...Sxe6
        • 2.Qxh7#
      • 1...d4
        • 2.Sef4#
      • 1...Bb2
        • 2.Rxd2#
      • 1...Qh4!
    • 1.Qxh7+?
      • 1...Sg6
        • 2.Qxg6#
      • 1...Sxh7!
  • Keys
    • 1.Sc2!
      • threat
        • 2.Rd4#
      • 1...Qh4
        • 2.Qxd5#
      • 1...Bb2
        • 2.Rxd2#
      • 1...Se6
        • 2.Qxh7#
      • 1...d4
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::R1(B),XP(b)
    • S(j);N_GUARD::QAB(J),XP(g)
  • Tries
    • Try
      • S(F);
      • Threat
        • R1(G)
      • Vars
        • Q(i);N_GUARD::QAR2(J),XP(e)
        • S(j);N_GUARD::QAB(J),XP(g)
        • P(e);::S(F)
      • Refutation
        • B(a);
    • Try
      • S(F);
      • Threat
        • R1(G)
      • Vars
        • Q(i);N_GUARD::QAR2(J),XP(e)
        • B(a);N_GUARD::R1(B),XP(b)
        • S(j);N_GUARD::QAB(J),XP(g)
      • Refutation
        • P(e);
    • Try
      • S(F);
      • Threat
        • R1(G)
      • Vars
        • Q(i);N_GUARD::QAR2(J),XP(e)
        • B(a);N_GUARD::R1(B),XP(b)
        • S(j);N_GUARD::QAB(J),XP(g)
      • Refutation
        • P(e);
    • Try
      • S(F);
      • Threat
        • R1(G)
      • Vars
        • Q(i);N_GUARD::QAR2(J),XP(e)
        • B(a);N_GUARD::R1(B),XP(b)
        • S(j);N_GUARD::QAB(J),XP(g)
      • Refutation
        • P(e);
    • Try
      • S(F);
      • Threat
        • R1(G)
      • Vars
        • P(e);::S(C)
        • Q(i);N_GUARD::QAR2(J),XP(e)
        • B(a);N_GUARD::R1(B),XP(b)
      • Refutation
        • S(j);
    • Try
      • S(F);
      • Threat
        • R1(G)
      • Vars
        • Q(i);N_GUARD::QAR2(J),XP(e)
        • B(a);N_GUARD::R1(B),XP(b)
        • S(j);N_GUARD::QAB(J),XP(g)
      • Refutation
        • P(e);
    • Try
      • S(F);
      • Threat
        • R1(G)
      • Vars
        • S(j);N_GUARD,XS(F)::QAB(J),XP(g)
        • P(e);::S(F)
        • B(a);N_GUARD::R1(B),XP(b)
      • Refutation
        • Q(i);
    • Try
      • Q(J);CHECK,XP(g)
      • Vars
        • S(j);N_GUARD,P_SPINS(j)::QAB(J),XS(j)
      • Refutation
        • S(j);XQ(J)
  • Actual
    • S(F);
    • Threat
      • R1(G)
    • Vars
      • Q(i);N_GUARD::QAR2(J),XP(e)
      • B(a);N_GUARD::R1(B),XP(b)
      • S(j);N_GUARD::QAB(J),XP(g)
      • P(e);::S(C)
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