MESON Chess Problem Database

Problem Display
PID: 189447 (K6Q/5b2/p1p5/2p2pN1/5k1P/6NP/rr4R1/n5B1 w - - 0 1)

Togstad, Jacob J

1st Prize, Nordisk Schackforbund, 1911

K6Q/5b2/p1p5/2p2pN1/5k1P/6NP/rr4R1/n5B1

#2

8 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rc2
      • 2.Qb8#
    • 1...Rxg2
      • 2.Qb8#
    • 1...Rb8+
      • 2.Qxb8#
    • 1...Bb3
      • 2.Sh5#
      • 2.Qb8#
    • 1...Bc4
      • 2.Sh5#
    • 1...Bd5
      • 2.Sh5#
    • 1...Bh5
      • 2.Sxh5#
    • 1...Be6
      • 2.Sh5#
    • 1...Bg8
      • 2.Sh5#
    • 1...Sc2
      • 2.Se2#
    • 1...Sb3
      • 2.Qb8#
    • 1...c4
      • 2.Qd4#
  • Tries
    • 1.Bd4?
      • threat
        • 2.Qe5#
      • 1...Rb8+
        • 2.Qxb8#
      • 1...cxd4
        • 2.Qxd4#
      • 1...Re2!
    • 1.Rxb2?
      • threat
        • 2.Se2#
        • 2.Qb8#
      • 1...Kxg3
        • 2.Bh2#
      • 1...Bc4
        • 2.Sh5#
        • 2.Qb8#
      • 1...Bh5
        • 2.Sxh5#
        • 2.Qb8#
      • 1...Be8
        • 2.Se2#
      • 1...Bg8
        • 2.Se2#
        • 2.Sh5#
      • 1...Rxb2!
    • 1.Rd2?
      • threat
        • 2.Se2#
      • 1...Rb8+
        • 2.Qxb8#
      • 1...Kxg3
        • 2.Bh2#
      • 1...Bc4
        • 2.Sh5#
      • 1...Bh5
        • 2.Sxh5#
      • 1...Rxd2!
    • 1.Re2?
      • threat
        • 2.Qe5#
      • 1...Rb8+
        • 2.Qxb8#
      • 1...Kxg3
        • 2.Bh2#
      • 1...Rxe2!
    • 1.Qxb2?
      • threat
        • 2.Se2#
        • 2.Qb8#
      • 1...Bb3
        • 2.Se2#
        • 2.Sh5#
      • 1...Bc4
        • 2.Sh5#
        • 2.Qb8#
      • 1...Bh5
        • 2.Sxh5#
        • 2.Qb8#
      • 1...Sb3
        • 2.Se2#
      • 1...Rxb2!
  • Keys
    • 1.Rc2!
      • threat
        • 2.Se2#
      • 1...Rb8+
        • 2.Qxb8#
      • 1...Kxg3
        • 2.Bh2#
      • 1...Rxc2
        • 2.Qb8#
      • 1...Bc4
        • 2.Sh5#
      • 1...Bh5
        • 2.Sxh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(c);N_GUARD::QAB(H)
    • R(c);N_GUARD,XR(B)::QAB(H)
    • R(c);CHECK,N_GUARD::QAB(H),XR(c)
    • B(i);N_GUARD::S(C)
    • B(i);N_GUARD::S(C),XB(i)
    • S(a);S_CUTR(c)::S(C)
    • S(a);S_CUTR(c)::QAB(H)
    • P(e);N_GUARD::QAR2(H)
  • Tries
    • Try
      • B(A);
      • Threat
        • QAB1(H)
      • Vars
        • R(c);CHECK,N_GUARD::QAB(H),XR(c)
        • P(e);OGATE,XB(A)::QAR2(H),XP(e)
      • Refutation
        • R(c);
    • Try
      • R(B);XR(c)
      • Threat
        • DUALS(2)
      • Vars
        • K(d);OGATEB,S_FLIGHT,XS(C)::B(A)
        • B(i);::S(C)
      • Refutation
        • R(b);XR(B)
    • Try
      • R(B);
      • Threat
        • S(C)
      • Vars
        • R(c);CHECK,N_GUARD::QAB(H),XR(c)
        • K(d);OGATEB,S_FLIGHT,XS(C)::B(A)
        • B(i);N_GUARD::S(C)
        • B(i);N_GUARD::S(C),XB(i)
      • Refutation
        • R(c);XR(B)
    • Try
      • R(B);
      • Threat
        • QAB1(H)
      • Vars
        • R(c);CHECK,N_GUARD::QAB(H),XR(c)
        • K(d);OGATEB,S_FLIGHT,XS(C)::B(A)
      • Refutation
        • R(c);XR(B)
    • Try
      • Q(H);XR(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::S(C)
      • Refutation
        • R(b);XQ(H)
  • Actual
    • R(B);
    • Threat
      • S(C)
    • Vars
      • R(c);CHECK,N_GUARD::QAB(H),XR(c)
      • K(d);OGATEB,S_FLIGHT,XS(C)::B(A)
      • R(c);N_GUARD,XR(B)::QAB(H)
      • B(i);N_GUARD::S(C)
      • B(i);N_GUARD::S(C),XB(i)
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