MESON Chess Problem Database

Problem Display
PID: 273734 (8/B2p1q1b/K2P4/4p3/Rpkn4/2p4r/4P1B1/2N2Q2 w - - 0 1)

Dittrich, Stefan

6th Comm., Grunenwald/Monreal JT (diagrammes), 1978

8/B2p1q1b/K2P4/4p3/Rpkn4/2p4r/4P1B1/2N2Q2

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Qxf7#
    • 1...Sxe2
      • 2.Qxf7#
    • 1...Sb3
      • 2.Qxf7#
    • 1...Sf3
      • 2.e4#
    • 1...Sb5
      • 2.Qxf7#
    • 1...Sf5
      • 2.e3#
    • 1...Sc6
      • 2.Qxf7#
  • Tries
    • 1.e3+?
      • 1...Bd3
        • 2.Qxd3#
      • 1...Se2
        • 2.Qxf7#
      • 1...Qxf1!
    • 1.e4+?
      • 1...Rd3
        • 2.Qxd3#
      • 1...Se2
        • 2.Qxf7#
      • 1...Qxf1!
  • Keys
    • 1.Ra5!
      • threat
        • 2.Rc5#
      • 1...Sxe2
        • 2.Qxf7#
      • 1...b3
        • 2.Ra4#
      • 1...Qd5
        • 2.Bxd5#
      • 1...Sc2
        • 2.Qxf7#
      • 1...Sb3
        • 2.Qxf7#
      • 1...Sf3
        • 2.e4#
      • 1...Sb5
        • 2.Qxf7#
      • 1...Sf5
        • 2.e3#
      • 1...Sc6
        • 2.Qxf7#
      • 1...Se6
        • 2.Bd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(e);N_GUARD::QAB(B),XQ(h)
    • S(e);N_GUARD,P_SPINS(e),XP(C)::QAB(B),XQ(h)
    • S(e);N_GUARD,S_CUTQ(h),S_CUTR(b)::QAB(B)+P(C)
    • S(e);N_GUARD,S_CUTB(i),S_CUTQ(h)::QAB(B)+P(C)
  • Tries
    • Try
      • P(C);CHECK
      • Vars
        • B(i);N_GUARD,P_SPINB(i)::QAB1(B),XB(i)
        • S(e);N_GUARD,P_SPINS(e)::QAB(B),XQ(h)
      • Refutation
        • Q(h);XQ(B)
    • Try
      • P(C);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAB1(B),XR(b)
        • S(e);N_GUARD,P_SPINS(e)::QAB(B),XQ(h)
      • Refutation
        • Q(h);XQ(B)
  • Actual
    • R(E);N_PINP(c)
    • Threat
      • R1(E)
    • Vars
      • S(e);N_GUARD,P_SPINS(e),XP(C)::QAB(B),XQ(h)
      • P(c);OGATEB::R(E)
      • Q(h);N_GUARD::B(D),XQ(h)
      • S(e);N_GUARD::QAB(B),XQ(h)
      • S(e);N_GUARD,S_CUTQ(h),S_CUTR(b)::QAB(B)+P(C)
      • S(e);N_GUARD,S_CUTB(i),S_CUTQ(h)::QAB(B)+P(C)
      • S(e);S_CUTQ(h)::B(D)
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