MESON Chess Problem Database

Problem Display
PID: 163660 (2Q5/8/1p2RPr1/b2N2p1/1p3P2/n2kB3/3P1K2/N2R4 w - - 0 1)

Rice, John Michael

stern, 1996

(First published on Thu Mar 28 1996)

2Q5/8/1p2RPr1/b2N2p1/1p3P2/n2kB3/3P1K2/N2R4

#2

10 + 7

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Qc2#
    • 1...Sc2
      • 2.Qxc2#
    • 1...Sb5
      • 2.Qc2#
    • 1...gxf4
      • 2.Sxf4#
  • Tries
    • 1.Rb1?
      • threat
        • 2.Rb3#
      • 1...Sxb1
        • 2.Qc2#
      • 1...Sb5
        • 2.Qc2#
      • 1...b3!
    • 1.Re4?
      • threat
        • 2.Rd4#
      • 1...Sc2
        • 2.Qxc2#
        • 2.Qc4#
      • 1...Sb5
        • 2.Qc2#
        • 2.Qc4#
      • 1...Kxe4!
    • 1.Qd7?
      • threat
        • 2.Sxb6#
      • 1...Kc4
        • 2.d3#
      • 1...Sc2
        • 2.Qb5#
      • 1...Sc4
        • 2.Sxb4#
      • 1...Sb5
        • 2.Qxb5#
      • 1...b5
        • 2.Sb6#
      • 1...Rg7!
    • 1.Qc5?
      • threat
        • 2.Qd4#
      • 1...Sc2
        • 2.Qxc2#
        • 2.Qb5#
      • 1...Sb5
        • 2.Qc2#
        • 2.Qxb5#
      • 1...bxc5!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Sc3#
      • 1...Ke4
        • 2.d3#
      • 1...Rxf6
        • 2.Sxf6#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sc4
        • 2.Qf5#
      • 1...Sb5
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(a);N_GUARD::QAB1(J)
    • S(a);N_GUARD::QAB1(J),XS(a)
    • P(e);XP(F)::S(G),XP(e)
  • Tries
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • S(a);N_GUARD,XR(B)::QAB1(J)
        • S(a);N_GUARD::QAB1(J)
      • Refutation
        • P(c);
    • Try
      • R(H);
      • Threat
        • R1(H)
      • Refutation
        • K(b);S_FLIGHT,XR(H)
    • Try
      • Q(J);
      • Threat
        • QAR(J)+S(G),XP(f)
      • Vars
        • K(b);OGATE,S_FLIGHT::P(C)
        • S(a);N_GUARD::QAB(J)
        • S(a);SBLOCK::QAR(J)+S(G),DCHECK,XP(c)
        • S(a);N_GUARD::QAB(J),XS(a)
        • P(f);::QAR(J)+S(G)
      • Refutation
        • R(g);
    • Try
      • Q(J);
      • Threat
        • QAR1(J)
      • Refutation
        • P(f);XQ(J)
  • Actual
    • R(H);
    • Threat
      • R(H)+S(G)
    • Vars
      • K(b);OGATE,S_FLIGHT::P(C)
      • R(g);P_PINP(F),XP(I)::R(H)+S(G),XR(g)
      • S(a);N_GUARD::QAB1(J),XS(a)
      • S(a);SBLOCK::QAB(J)
      • S(a);N_GUARD::QAB1(J)
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