MESON Chess Problem Database

Problem Display
PID: 179016 (2Rr1bq1/4p1p1/4B1p1/1R1N1nK1/1P1k4/2prpP2/1Q2P2B/8 w - - 0 1)

Hannelius, Jan Ingvar

2nd Prize, Magasinet, 1951

2Rr1bq1/4p1p1/4B1p1/1R1N1nK1/1P1k4/2prpP2/1Q2P2B/8

#2

10 + 11

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Qxc3#
    • 1...Rd2
      • 2.Qxc3#
    • 1...Rxd5
      • 2.Rxd5#
  • Tries
    • 1.Sxc3?
      • threat
        • 2.Be5#
        • 2.Rc4#
      • 1...Rxc8
        • 2.Be5#
      • 1...Rd5
        • 2.Rxd5#
      • 1...Sg3
        • 2.Rc4#
        • 2.Rxd8#
      • 1...Sd6
        • 2.Be5#
        • 2.Rd5#
      • 1...Qxe6!
    • 1.Sf4?
      • threat
        • 2.Rc4#
      • 1...Qxe6
        • 2.Sxe6#
      • 1...Rd5
        • 2.Rxd5#
      • 1...Sd6
        • 2.Rd5#
      • 1...Rxc8!
    • 1.Sb6?
      • threat
        • 2.Be5#
        • 2.Rc4#
      • 1...Rxc8
        • 2.Be5#
        • 2.Rd5#
      • 1...Rd5
        • 2.Rxd5#
        • 2.Rc4#
      • 1...Sg3
        • 2.Rc4#
        • 2.Rxd8#
      • 1...Sd6
        • 2.Be5#
        • 2.Rd5#
      • 1...Qxe6!
    • 1.Sc7?
      • threat
        • 2.Be5#
      • 1...Qxe6
        • 2.Sxe6#
      • 1...Sg3
        • 2.Rxd8#
      • 1...Rd5!
    • 1.Qc2?
      • threat
        • 2.Qxd3#
      • 1...Rd1
        • 2.Qxd1#
        • 2.Qe4#
        • 2.Qxc3#
      • 1...Rd2
        • 2.Qe4#
        • 2.Qxc3#
      • 1...Sg3!
  • Keys
    • 1.Sxe3!
      • threat
        • 2.Sc2#
      • 1...Kxe3
        • 2.Bg1#
      • 1...Rxe3
        • 2.Rc4#
      • 1...Sxe3
        • 2.Be5#
      • 1...Rd2
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(b);N_GUARD::QAB1(A),XP(a)
    • R(i);OGATE,XS(G)::R1(F),XR(i)
  • Tries
    • Try
      • S(G);XP(a)
      • Threat
        • DUALS(2)
      • Vars
        • R(i);XR(J)::B(C)
        • R(i);N_GUARD::R1(F),XR(i)
      • Refutation
        • Q(k);XB(I)
    • Try
      • S(G);
      • Threat
        • R1(J)
      • Vars
        • Q(k);XB(I)::S(G),XQ(k)
        • R(i);N_GUARD::R1(F),XR(i)
        • S(e);S_CUTR(i)::R1(F)
      • Refutation
        • R(i);XR(J)
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Refutation
        • Q(k);XB(I)
    • Try
      • S(G);
      • Threat
        • B(C)
      • Vars
        • Q(k);XB(I)::S(G),XQ(k)
        • S(e);N_GUARD::R(J),XR(i)
      • Refutation
        • R(i);
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAR1(A),XR(b)
      • Refutation
        • S(e);
  • Actual
    • S(G);XP(c)
    • Threat
      • S(G)
    • Vars
      • K(d);N_SPINP(a),OGATEB,S_FLIGHT,XS(G)::B(C)
      • R(b);SBLOCK,XS(G)::R1(J)
      • S(e);SBLOCK,XS(G)::B(C)
      • R(b);N_GUARD::QAB1(A),XP(a)
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