MESON Chess Problem Database

Problem Display
PID: 22187 (8/8/3KBR2/2PNPRb1/2PqkP1n/1NP1P3/p1PB2P1/1b1Q4 w - - 0 1)

Hynonen, Veikko August

Helsingin Sanomat, 1968

8/8/3KBR2/2PNPRb1/2PqkP1n/1NP1P3/p1PB2P1/1b1Q4

#2

16 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc3
      • 2.Sxc3#
    • 1...Qxc5+
      • 2.Sxc5#
    • 1...Qxe5+
      • 2.Rxe5#
    • 1...Qxd2
      • 2.Sxd2#
    • 1...Qxd5+
      • 2.Bxd5#
    • 1...Bxf4
      • 2.Rxf4#
    • 1...Sf3
      • 2.Qxf3#
      • 2.gxf3#
    • 1...Sxf5+
      • 2.Bxf5#
    • 1...Sg6
      • 2.Qf3#
  • Tries
    • 1.exd4?
      • threat
        • 2.Qe2#
        • 2.Qe1#
      • 1...Sxf5+
        • 2.Bxf5#
      • 1...Bxc2
        • 2.Qxc2#
        • 2.Qe2#
      • 1...Bxf4
        • 2.Rxf4#
      • 1...Sf3
        • 2.Qe2#
        • 2.Qxf3#
        • 2.gxf3#
      • 1...Sxg2!
  • Keys
    • 1.Qe2!
      • threat
        • 2.exd4#
      • 1...Qxc5+
        • 2.Sxc5#
      • 1...Qxe5+
        • 2.Rxe5#
      • 1...Qxd5+
        • 2.Bxd5#
      • 1...Sxf5+
        • 2.Bxf5#
      • 1...Qxc3
        • 2.Sxc3#
      • 1...Qxe3
        • 2.Qxe3#
      • 1...Qxd2
        • 2.Sxd2#
      • 1...Qxc4
        • 2.Qxc4#
      • 1...Bxf4
        • 2.Rxf4#
      • 1...Sxg2
        • 2.Qxg2#
      • 1...Qd3
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • Q(c);N_PINS(K),XP(F)::S(K),XQ(c)
    • Q(c);CHECK,N_PINS(K),XP(J)::S(E),XQ(c)
    • Q(c);CHECK,N_PINS(K),OGATE,XP(L)::R1(M),XQ(c)
    • Q(c);XB(C)::S(E),XQ(c)
    • Q(c);CHECK,OGATE,XS(K)::B(O),XQ(c)
    • B(f);OGATE,P_PINP(L),XP(I)::R1(M),XB(f)
    • S(e);CHECK,OGATE,XR(M)::B(O),XS(e)
    • S(e);N_GUARD::QAB1(A)
  • Tries
    • Try
      • P(G);N_SPINS(K),XQ(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(e);CHECK,OGATE,XR(M)::B(O),XS(e)
        • B(f);OGATE,P_PINP(L),XP(I)::R1(M),XB(f)
      • Refutation
        • S(e);XP(D)
  • Actual
    • Q(A);
    • Threat
      • QAR(A)+P(G),XQ(c)
    • Vars
      • Q(c);CHECK,N_PINS(K),XP(J)::S(E),XQ(c)
      • Q(c);CHECK,N_PINS(K),OGATE,XP(L)::R1(M),XQ(c)
      • Q(c);CHECK,OGATE,XS(K)::B(O),XQ(c)
      • S(e);CHECK,OGATE,XR(M)::B(O),XS(e)
      • Q(c);N_PINS(K),XP(F)::S(K),XQ(c)
      • Q(c);N_PINS(K),OGATE,P_SPINQ(c),XP(G)::QAR1(A),XQ(c)
      • Q(c);XB(C)::S(E),XQ(c)
      • Q(c);N_PINS(K),OGATE,XP(H)::QAR2(A),XQ(c)
      • B(f);OGATE,P_PINP(L),XP(I)::R1(M),XB(f)
      • S(e);OGATE,XP(D)::QAB(A),XS(e)
      • Q(c);N_GUARD::QAB1(A),XQ(c)
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