MESON Chess Problem Database

Problem Display
PID: 15818 (2Kn4/1p1PQ1pr/4P1p1/1r2k2p/3p2P1/3P2b1/B2N4/5R2 w - - 0 1)

Shire, David J

Die Schwalbe, 1988

2Kn4/1p1PQ1pr/4P1p1/1r2k2p/3p2P1/3P2b1/B2N4/5R2

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Qc5#
    • 1...Rb2
      • 2.Qc5#
    • 1...Rb4
      • 2.Qc5#
    • 1...Rc5+
      • 2.Qxc5#
    • 1...Rd5
      • 2.Sc4#
    • 1...Rb6
      • 2.Qc5#
    • 1...Bf4
      • 2.Sf3#
    • 1...Sxe6
      • 2.Qxe6#
    • 1...Sf7
      • 2.exf7#
    • 1...g5
      • 2.Rf5#
  • Tries
    • 1.Se4?
      • threat
        • 2.Qg5#
        • 2.Qd6#
      • 1...Rc5+
        • 2.Qxc5#
      • 1...Sxe6
        • 2.Qd6#
        • 2.Qxe6#
      • 1...Rb3
        • 2.Qd6#
      • 1...Rb6
        • 2.Qc5#
        • 2.Qg5#
      • 1...Bf4
        • 2.Qd6#
      • 1...Bh4
        • 2.Qd6#
      • 1...Sf7
        • 2.exf7#
      • 1...g5
        • 2.Rf5#
        • 2.Qxg5#
        • 2.Qd6#
      • 1...Rd5!
    • 1.Re1+?
      • 1...Kf4
        • 2.Re4#
      • 1...Bxe1!
  • Keys
    • 1.Kc7!
      • threat
        • 2.Qg5#
        • 2.Qd6#
      • 1...Rc5+
        • 2.Qxc5#
      • 1...Sxe6+
        • 2.Qxe6#
      • 1...Rb3
        • 2.Qd6#
      • 1...Bf2
        • 2.Qg5#
      • 1...Rd5
        • 2.Sc4#
      • 1...Rb6
        • 2.Qc5#
        • 2.Qg5#
      • 1...Bf4
        • 2.Sf3#
      • 1...Bh4
        • 2.Qd6#
      • 1...Sf7
        • 2.exf7#
      • 1...g5
        • 2.Rf5#
        • 2.Qxg5#
        • 2.Qd6#

There are these versions: 30038

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(c);N_GUARD::QAR2(H)
    • R(c);CHECK,N_GUARD::QAR2(H),XR(c)
    • R(c);SBLOCK::S(C)
    • B(a);SBLOCK::S(C)
    • S(j);OGATE,P_SPINS(j),XP(F)::QAR1(H),XS(j)
    • S(j);OGATE::QAR(H)+P(F),XS(j)
    • P(f);N_GUARD::R1(A)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);CHECK,N_GUARD::QAR2(H),XR(c)
        • R(c);::QAB1(H)
        • B(a);::QAB1(H)
        • S(j);OGATE::QAR(H)+P(F),XS(j)
      • Refutation
        • R(c);
    • Try
      • R(A);CHECK
      • Vars
        • K(d);S_FLIGHT::R1(A)
      • Refutation
        • B(a);XR(A)
  • Actual
    • K(I);P-FLIGHT
    • Threat
      • DUALS(2)
    • Vars
      • R(c);CHECK,N_GUARD::QAR2(H),XR(c)
      • S(j);CHECK,OGATE,P_SPINS(j),XP(F)::QAR1(H),XS(j)
      • R(c);::QAB1(H)
      • B(a);::QAR2(H)
      • R(c);SBLOCK::S(C)
      • B(a);SBLOCK::S(C)
      • B(a);::QAB1(H)
      • S(j);OGATE::QAR(H)+P(F),XS(j)
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