MESON Chess Problem Database

Problem Display
PID: 34307 (1bB4B/8/2p3p1/2NR1p1p/4Nk1p/3p4/5PPK/3Qn3 w - - 0 1)

Casa, Alex

Comm., Die Schwalbe, 2001

1bB4B/8/2p3p1/2NR1p1p/4Nk1p/3p4/5PPK/3Qn3

#2

9 + 9

23 Die Schwalbe 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Bxe5#
    • 1...Ba7
      • 2.Be5#
    • 1...Sc2
      • 2.Qf3#
    • 1...Sf3+
      • 2.Qxf3#
    • 1...h3
      • 2.g3#
    • 1...fxe4
      • 2.Se6#
    • 1...g5
      • 2.Rxf5#
  • Tries
    • 1.Kh3?
      • threat
        • 2.Qd2#
      • 1...fxe4
        • 2.Se6#
      • 1...Sc2
        • 2.Qf3#
      • 1...Sf3
        • 2.Qxf3#
      • 1...d2
        • 2.Qxd2#
      • 1...Sxg2!
    • 1.Sxd3+?
      • 1...Sxd3
        • 2.Qf3#
      • 1...Kxe4+!
    • 1.Bf6?
      • threat
        • 2.Bg5#
      • 1...Sf3+
        • 2.Qxf3#
      • 1...g5
        • 2.Bxg5#
        • 2.Rxf5#
      • 1...cxd5!
    • 1.Re5?
      • threat
        • 2.Se6#
      • 1...Sf3+
        • 2.Qxf3#
      • 1...Bxe5!
    • 1.Qe2?
      • threat
        • 2.Se6#
      • 1...Sf3+
        • 2.Qxf3#
      • 1...dxe2!
  • Keys
    • 1.Rd4!
      • threat
        • 2.Se6#
      • 1...Sf3+
        • 2.Qxf3#
      • 1...fxe4
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • B(i);N_GUARD::B(I),XB(i)
    • B(i);N_GUARD::B(I)
    • S(a);N_GUARD::QAR1(A)
    • S(a);CHECK,N_GUARD::QAR1(A),XS(a)
    • P(d);N_GUARD::P(C)
    • P(e);SBLOCK,XS(E)::S(F)
    • P(h);N_GUARD::R1(G),XP(e)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • QAB(A)
      • Vars
        • P(e);SBLOCK,XS(E)::S(F)
        • S(a);N_GUARD::QAR1(A)
        • S(a);N_GUARD::QAR1(A),XS(a)
        • P(b);::QAB(A),XP(b)
      • Refutation
        • S(a);XP(C)
    • Try
      • S(F);CHECK,XP(b)
      • Vars
        • S(a);XS(F)::QAR1(A)
      • Refutation
        • K(c);CHECK,P-FLIGHT,XS(E)
    • Try
      • B(I);
      • Threat
        • B(I)
      • Vars
        • S(a);CHECK,N_GUARD::QAR1(A),XS(a)
      • Refutation
        • P(g);XR(G)
    • Try
      • R(G);
      • Threat
        • S(F)
      • Vars
        • S(a);CHECK,N_GUARD::QAR1(A),XS(a)
      • Refutation
        • B(i);XR(G)
    • Try
      • Q(A);
      • Threat
        • S(F)
      • Vars
        • S(a);CHECK,N_GUARD::QAR1(A),XS(a)
      • Refutation
        • P(b);XQ(A)
  • Actual
    • R(G);
    • Threat
      • S(F)
    • Vars
      • S(a);CHECK,N_GUARD::QAR1(A),XS(a)
      • P(e);P_SPINP(e),XS(E)::QAB(A)
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