MESON Chess Problem Database

Problem Display
PID: 232765 (2B1r2b/1b6/1B2n1N1/2Qp3R/3Pkp2/1R6/r2P2PK/qN2n3 w - - 0 1)

Hoy, Paul

Freie Presse, 1968

2B1r2b/1b6/1B2n1N1/2Qp3R/3Pkp2/1R6/r2P2PK/qN2n3

#2

11 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd2
      • 2.Sxd2#
    • 1...Ba6
      • 2.Qxd5#
    • 1...Bxc8
      • 2.Qxd5#
    • 1...Be5
      • 2.Rxe5#
    • 1...Sf3+
      • 2.gxf3#
    • 1...Sc7
      • 2.Bf5#
    • 1...Sd8
      • 2.Bf5#
    • 1...Sf8
      • 2.Bf5#
    • 1...f3
      • 2.Re3#
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qe2#
      • 1...Sf3+
        • 2.gxf3#
      • 1...Qxd4
        • 2.Sc3#
      • 1...Rxd2
        • 2.Sxd2#
      • 1...Bxd4
        • 2.Re5#
      • 1...Sxg2
        • 2.Qd3#
      • 1...Sxd4
        • 2.Bf5#
      • 1...dxc4
        • 2.Bxb7#
      • 1...Qc3
        • 2.Sxc3#
      • 1...Ba6
        • 2.Qxd5#
      • 1...Sc2
        • 2.Qd3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sc5
        • 2.Bf5#
      • 1...f3
        • 2.Re3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 5
  • Sets
    • R(c);P_PINP(C),XP(B)::S(A),XR(c)
    • B(h);N_GUARD::QAB1(G),XP(f)
    • B(h);N_GUARD,XB(K)::QAB1(G),XP(f)
    • B(j);N_GUARD::R1(H),XB(j)
    • S(b);CHECK,OGATE::P(C),XS(b)
    • S(g);OGATE::B(K)
    • P(e);N_GUARD::R1(E)
  • Actual
    • Q(G);
    • Threat
      • QAR2(G)
    • Vars
      • S(b);CHECK,OGATE::P(C),XS(b)
      • Q(a);N_GUARD,P_SPINQ(a),XP(F)::S(A)
      • R(c);P_PINP(C),XP(B)::S(A),XR(c)
      • B(j);N_GUARD,P_SPINB(j),XP(F)::R1(H)
      • S(b);N_GUARD,XP(C)::QAB1(G)
      • S(g);OGATE,P_SPINS(g),XP(F)::B(K)
      • P(f);OGATEB,XQ(G)::B(K),XB(h)
      • Q(a);N_GUARD::S(A),XQ(a)
      • B(h);N_GUARD::QAB1(G),XP(f)
      • S(b);N_GUARD::QAB1(G)
      • S(b);N_GUARD::QAB1(G),XS(b)
      • S(g);OGATE::B(K)
      • P(e);N_GUARD::R1(E)
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