MESON Chess Problem Database

Problem Display
PID: 58004 (3nr1N1/q6b/N4R2/b2n3p/2PpkPPQ/r2p2Kp/5P2/1B1R4 w - - 0 1)

Fano, Gustav

Nuova Rivista degli Scacchi, 1883

3nr1N1/q6b/N4R2/b2n3p/2PpkPPQ/r2p2Kp/5P2/1B1R4

#2

11 + 12

15 British Chess Magazine 1884

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.Sxc5#
    • 1...Qb8
      • 2.Sc5#
    • 1...Qb7
      • 2.Sc5#
    • 1...Qd7
      • 2.Sc5#
    • 1...Qf7
      • 2.Sc5#
    • 1...Qg7
      • 2.Sc5#
    • 1...Qa8
      • 2.Sc5#
    • 1...Ra1
      • 2.Bxd3#
    • 1...Ra2
      • 2.Bxd3#
    • 1...Ra4
      • 2.Bxd3#
    • 1...Bc3
      • 2.Bxd3#
    • 1...Sc3
      • 2.Bxd3#
    • 1...Se3
      • 2.f3#
    • 1...Sb4
      • 2.Re1#
    • 1...Sb6
      • 2.Sc5#
    • 1...Sxf6
      • 2.Sxf6#
  • Tries
    • 1.Re1+?
      • 1...Se3
        • 2.f3#
      • 1...Bxe1!
    • 1.Rxd3?
      • threat
        • 2.Re3#
        • 2.f3#
      • 1...Sxf4
        • 2.Re3#
      • 1...hxg4
        • 2.Re3#
      • 1...Be1
        • 2.Re3#
      • 1...Se3
        • 2.Rxe3#
        • 2.f3#
      • 1...Rxd3+!
  • Keys
    • 1.Qxh5!
      • threat
        • 2.Qxd5#
      • 1...Bxg8
        • 2.Qg6#
        • 2.Qf5#
      • 1...Sxf4
        • 2.Rxf4#
      • 1...Sxf6
        • 2.Sxf6#
      • 1...Qc5
        • 2.Sxc5#
        • 2.Qxh7#
      • 1...Qb7
        • 2.Sc5#
      • 1...Qd7
        • 2.Sc5#
      • 1...Qf7
        • 2.Sc5#
      • 1...Qa8
        • 2.Sc5#
        • 2.Qxh7#
      • 1...Re5
        • 2.Qxe5#
      • 1...Bf5
        • 2.Qxf5#
      • 1...Sc3
        • 2.Bxd3#
      • 1...Se3
        • 2.f3#
      • 1...Sb4
        • 2.Re1#
      • 1...Sb6
        • 2.Sc5#
      • 1...Sc7
        • 2.Qxh7#
      • 1...Se7
        • 2.Qe5#

This is a version of 22222

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 8
  • Sets
    • Q(i);N_GUARD::S(I),XQ(i)
    • Q(i);N_GUARD,P_PINP(F)::S(I)
    • Q(i);N_GUARD::S(I)
    • Q(i);N_GUARD,P_PINP(G)::S(I)
    • R(a);N_GUARD::B(A),XP(b)
    • B(f);S_CUTR(a)::B(A),XP(b)
    • S(g);S_CUTR(a)::B(A),XP(b)
    • S(g);SBLOCK::P(C)
    • S(g);N_GUARD,S_CUTB(f)::R(B)
    • S(g);S_CUTQ(i)::S(I)
    • S(g);XR(J)::S(K),XS(g)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • S(g);P_SPINS(g)::P(C)
      • Refutation
        • B(f);P_PINP(C),XR(B)
    • Try
      • R(B);P_SPINR(B),XP(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(g);XP(F)::B(A)+R(B),DCHECK
        • P(h);XP(G)::B(A)+R(B),DCHECK
        • B(f);P_PINP(C)::B(A)+R(B),DCHECK
      • Refutation
        • R(a);CHECK,P_SPINR(a),XR(B)
  • Actual
    • Q(H);XP(h)
    • Threat
      • QAB1(H),XS(g)
    • Vars
      • S(g);OGATE,XP(F)::R1(J),XS(g)
      • S(g);XR(J)::S(K),XS(g)
      • Q(i);N_GUARD::S(I)
      • R(l);N_GUARD::QAR1(H),XR(l)
      • B(j);N_GUARD::QAB1(H),XB(j)
      • S(g);S_CUTR(a)::B(A),XP(b)
      • S(g);SBLOCK::P(C)
      • S(g);N_GUARD,S_CUTB(f)::R(B)
      • S(g);S_CUTQ(i)::S(I)
      • S(g);S_CUTQ(i)::QAB(H),XB(j)
      • S(g);S_CUTR(l)::QAR1(H)
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