MESON Chess Problem Database

Problem Display
PID: 57386 (1n1Bbb2/3p2p1/3p4/3PkNQ1/K2NPrp1/5p2/3P3n/4R2B w - - 0 1)

Hannelius, Jan Ingvar

The Problemist, 2005

1n1Bbb2/3p2p1/3p4/3PkNQ1/K2NPrp1/5p2/3P3n/4R2B

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Be7
      • 2.Qxe7#
    • 1...g6
      • 2.Bf6#
      • 2.Qf6#
  • Tries
    • 1.Sc2?
      • threat
        • 2.d4#
      • 1...Rxe4+
        • 2.Sfd4#
      • 1...Sc6!
    • 1.Sb3?
      • threat
        • 2.d4#
      • 1...Rxe4+
        • 2.Sfd4#
      • 1...Sc6!
    • 1.Sxf3+?
      • 1...Rxf3
        • 2.d4#
      • 1...gxf3
        • 2.d4#
      • 1...Sxf3!
    • 1.Sb5?
      • threat
        • 2.d4#
      • 1...Rxe4+
        • 2.Sfd4#
      • 1...Sc6!
    • 1.Sc6+?
      • 1...dxc6
        • 2.d4#
      • 1...Sxc6!
    • 1.Se6?
      • threat
        • 2.Qxf4#
        • 2.d4#
      • 1...Rxe4+
        • 2.Sfd4#
      • 1...Rxf5
        • 2.Qxf5#
        • 2.d4#
      • 1...Sc6
        • 2.Qxf4#
      • 1...Be7
        • 2.d4#
      • 1...dxe6+!
    • 1.Sxg7+?
      • 1...Rf5
        • 2.Bf6#
      • 1...Kxd4!
  • Keys
    • 1.Se2!
      • threat
        • 2.Qxf4#
      • 1...Rxe4+
        • 2.Sfd4#
      • 1...Kxe4
        • 2.Sxf4#
      • 1...Rxf5
        • 2.Qxf5#
      • 1...fxe2
        • 2.d4#
      • 1...Be7
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(k);N_GUARD::QAR2(I),XB(k)
  • Tries
    • Try
      • S(E);P_SPINP(F)
      • Threat
        • P(C)
      • Vars
        • R(c);CHECK,N_GUARD,P_SPINR(c),XP(F)::QAR(I)+S(H)
      • Refutation
        • S(i);
    • Try
      • S(E);P_SPINP(F)
      • Threat
        • P(C)
      • Vars
        • R(c);CHECK,N_GUARD,P_SPINR(c),XP(F)::QAR(I)+S(H)
      • Refutation
        • S(i);
    • Try
      • S(E);CHECK,P_SPINP(F),XP(b)
      • Vars
        • R(c);N_PINP(F),XS(E)::P(C)
        • P(d);XS(E)::P(C)
      • Refutation
        • S(a);XS(E)
    • Try
      • S(E);P_SPINP(F)
      • Threat
        • P(C)
      • Vars
        • R(c);CHECK,N_GUARD,P_SPINR(c),XP(F)::QAR(I)+S(H)
      • Refutation
        • S(i);
    • Try
      • S(E);CHECK,P_SPINP(F)
      • Vars
        • P(g);XS(E)::P(C)
      • Refutation
        • S(i);XS(E)
    • Try
      • S(E);P_SPINP(F)
      • Threat
        • DUALS(2)
      • Vars
        • R(c);CHECK,N_GUARD,P_SPINR(c),XP(F)::QAR(I)+S(H)
        • S(i);::QAB1(I),XR(c)
        • B(k);::P(C)
      • Refutation
        • P(g);CHECK,XS(E)
    • Try
      • S(H);CHECK,XP(h)
      • Vars
        • R(c);P_SPINR(c)::B(J)
      • Refutation
        • K(e);S_FLIGHT,XS(E)
  • Actual
    • S(E);P_SPINP(F)
    • Threat
      • QAB1(I),XR(c)
    • Vars
      • R(c);CHECK,N_GUARD,SBLOCK,XP(F)::QAR(I)+S(H)
      • K(e);P-FLIGHT,P_SPINP(b),XP(F)::R(A)+S(E),XR(c)
      • R(c);N_PINP(F),OGATE,P_SPINR(c),XS(H)::QAR1(I),XR(c)
      • P(b);XS(E)::P(C)
      • B(k);N_GUARD::QAR2(I),XB(k)
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