MESON Chess Problem Database

Problem Display
PID: 166488 (8/3Np3/2RBR1N1/K2p4/p1PkP3/2pp2Q1/8/2b5 w - - 0 1)

Shire, David J

The Problemist, 2017

8/3Np3/2RBR1N1/K2p4/p1PkP3/2pp2Q1/8/2b5

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bb2
      • 2.Qf2#
      • 2.Qg1#
    • 1...Ba3
      • 2.Qf2#
      • 2.Qg1#
    • 1...Be3
      • 2.Qe5#
    • 1...dxc4
      • 2.Bc5#
    • 1...dxe4
      • 2.Be5#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Qxd3#
      • 1...dxc4
        • 2.Bc5#
      • 1...dxe4
        • 2.Be5#
      • 1...Be3
        • 2.Qg7#
      • 1...d2
        • 2.Se2#
        • 2.Qf2#
        • 2.Qg1#
        • 2.Qd3#
      • 1...Bxf4!
    • 1.Sge5?
      • threat
        • 2.Qxd3#
      • 1...dxc4
        • 2.Rxc4#
      • 1...dxe4
        • 2.Bc5#
      • 1...Be3
        • 2.Sf3#
      • 1...d2
        • 2.Qd3#
      • 1...Kxe4!
    • 1.Sc5?
      • threat
        • 2.Qxd3#
      • 1...Kxc4
        • 2.Qxd3#
      • 1...dxc4
        • 2.Be5#
      • 1...dxe4
        • 2.Rxe4#
      • 1...d2
        • 2.Qd3#
      • 1...Be3!
    • 1.Bc7?
      • threat
        • 2.Bb6#
      • 1...Ba3
        • 2.Qf2#
        • 2.Qg1#
      • 1...c2!
    • 1.Bb8?
      • threat
        • 2.Ba7#
      • 1...Ba3
        • 2.Qf2#
        • 2.Qg1#
      • 1...c2!
    • 1.exd5?
      • threat
        • 2.Qe5#
      • 1...Bf4
        • 2.Qxf4#
      • 1...d2
        • 2.Qe3#
      • 1...exd6!
  • Keys
    • 1.Sde5!
      • threat
        • 2.Qxd3#
      • 1...Kxe4
        • 2.Qxd3#
      • 1...dxc4
        • 2.Rxc4#
      • 1...dxe4
        • 2.Bc5#
      • 1...Be3
        • 2.Sf3#
      • 1...d2
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK::QAB1(A)
    • P(f);SBLOCK,XP(B)::B(F)
    • P(f);SBLOCK,XP(C)::B(F)
  • Tries
    • Try
      • S(H);
      • Threat
        • QAR1(A),XP(c)
      • Vars
        • P(f);SBLOCK,XP(B)::B(F)
        • P(f);SBLOCK,XP(C)::B(F)
        • B(a);SBLOCK::QAB(A)
      • Refutation
        • B(a);XS(H)
    • Try
      • S(H);
      • Threat
        • QAR1(A),XP(c)
      • Vars
        • P(f);OGATE,XP(B)::R1(E),XP(f)
        • P(f);SBLOCK,XP(C)::B(F)
        • B(a);SBLOCK::S(H)
        • P(c);::QAR1(A)
      • Refutation
        • K(e);P-FLIGHT,XP(C)
    • Try
      • S(I);
      • Threat
        • QAR1(A),XP(c)
      • Vars
        • K(e);P-FLIGHT,XP(B)::QAB1(A),XP(c)
        • P(f);SBLOCK,XP(B)::B(F)
        • P(f);OGATE,XP(C)::R1(G),XP(f)
        • P(c);::QAR1(A)
      • Refutation
        • B(a);
    • Try
      • B(F);
      • Threat
        • B(F)
      • Refutation
        • P(b);
    • Try
      • B(F);
      • Threat
        • B(F)
      • Refutation
        • P(b);
    • Try
      • P(C);XP(f)
      • Threat
        • QAB1(A)
      • Vars
        • B(a);N_GUARD::QAR2(A),XB(a)
        • P(c);S_CUTB(a)::QAB1(A)
      • Refutation
        • P(g);XB(F)
  • Actual
    • S(I);
    • Threat
      • QAR1(A),XP(c)
    • Vars
      • K(e);P-FLIGHT,XP(C)::QAB1(A),XP(c)
      • P(f);OGATE,XP(B)::R1(E),XP(f)
      • P(f);SBLOCK,XP(C)::B(F)
      • B(a);SBLOCK::S(I)
      • P(c);::QAR1(A)
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