MESON Chess Problem Database

Problem Display
PID: 37077 (1n2Q2n/br2B1K1/6p1/2RPk3/r3pp1N/2P2P2/BN6/1b2R3 w - - 0 1)

Mironov, Aleksey Fedorovich

Die Schwalbe, 2001

1n2Q2n/br2B1K1/6p1/2RPk3/r3pp1N/2P2P2/BN6/1b2R3

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa2
      • 2.Sc4#
    • 1...Ra3
      • 2.Sc4#
    • 1...Rc4
      • 2.Sxc4#
    • 1...Ra5
      • 2.Sc4#
    • 1...Ra6
      • 2.Sc4#
    • 1...Rxb2
      • 2.Bf8#
    • 1...Rb3
      • 2.Bf8#
    • 1...Rb4
      • 2.Bf8#
    • 1...Rb5
      • 2.Bf8#
    • 1...Rb6
      • 2.d6#
    • 1...Rxe7+
      • 2.Qxe7#
    • 1...Bxa2
      • 2.Sd3#
    • 1...Bd3
      • 2.Sxd3#
    • 1...Sd7
      • 2.Bf8#
  • Tries
    • 1.Qf7?
      • threat
        • 2.Qe6#
        • 2.Qf6#
      • 1...Rxe7
        • 2.Qxe7#
      • 1...Ra6
        • 2.Sc4#
      • 1...Rb6
        • 2.d6#
      • 1...Sd7
        • 2.Qe6#
      • 1...Sxf7!
    • 1.Qxb8+?
      • 1...Rc7
        • 2.Qxc7#
      • 1...Bxb8
        • 2.d6#
      • 1...Rxb8!
    • 1.fxe4?
      • threat
        • 2.Sf3#
      • 1...Rxe7+
        • 2.Qxe7#
      • 1...Rxe4
        • 2.Sc4#
      • 1...Bxe4
        • 2.Sd3#
      • 1...f3!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Qf6#
      • 1...Rxe7+
        • 2.Qxe7#
      • 1...Ra6
        • 2.Sc4#
      • 1...Rb6
        • 2.d6#
      • 1...Sd7
        • 2.Bd6#
      • 1...Sf7
        • 2.Bf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 10
  • Sets
    • R(b);N_GUARD,XB(B)::S(C)
    • R(b);N_GUARD::S(C)
    • R(b);N_GUARD::S(C),XR(b)
    • R(h);N_PINB(I),XS(C)::QAR(K)+B(I)
    • R(h);N_PINB(I)::QAR(K)+B(I)
    • R(h);N_PINB(I),S_CUTB(g)::R(G)+P(H)
    • R(h);CHECK,OGATE,P_SPINR(h),XB(I)::QAR2(K),XR(h)
    • B(a);N_GUARD,XB(B)::S(C)
    • B(a);N_GUARD::S(C),XB(a)
    • S(i);N_PINB(I)::QAR(K)+B(I)
  • Tries
    • Try
      • Q(K);N_SPINB(I)
      • Threat
        • DUALS(2)
      • Vars
        • R(h);OGATE,P_PINQ(K),XB(I)::QAR2(K),XR(h)
        • R(b);N_GUARD::S(C)
        • R(h);S_CUTB(g)::R(G)+P(H)
        • S(i);::QAR1(K)
      • Refutation
        • S(j);XQ(K)
    • Try
      • Q(K);CHECK,XS(i)
      • Vars
        • R(h);N_GUARD,P_SPINR(h)::QAB(K),XR(h)
        • B(g);N_GUARD,XQ(K)::R(G)+P(H)
      • Refutation
        • R(h);N_PINB(I),XQ(K)
    • Try
      • P(E);XP(c)
      • Threat
        • S(F)
      • Vars
        • R(h);CHECK,OGATE,P_SPINR(h),XB(I)::QAR2(K),XR(h)
        • R(b);N_GUARD,P_SPINR(b),XP(E)::S(C)
        • B(a);N_GUARD,P_SPINB(a),XP(E)::S(C)
      • Refutation
        • P(d);
  • Actual
    • Q(K);
    • Threat
      • QAB1(K)
    • Vars
      • R(h);CHECK,OGATE,XB(I)::QAR2(K),XR(h)
      • R(b);N_GUARD::S(C)
      • R(h);N_PINB(I),S_CUTB(g)::R(G)+P(H)
      • S(i);N_PINB(I)::B(I)
      • S(j);N_PINB(I)::B(I)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).