MESON Chess Problem Database

Problem Display
PID: 262122 (3K1BB1/3R4/8/1N1q1p2/P1k2rp1/2p5/n1Q2p1b/2n4b w - - 0 1)

Somma, Francesco

Schweizerische Schachzeitung, 1933

3K1BB1/3R4/8/1N1q1p2/P1k2rp1/2p5/n1Q2p1b/2n4b

#2

7 + 11

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.Sa3#
    • 1...Qf7
      • 2.Sa3#
    • 1...Qxg8
      • 2.Sa3#
    • 1...Rf3
      • 2.Bxd5#
    • 1...Rd4
      • 2.Sa3#
    • 1...Re4
      • 2.Bxd5#
    • 1...Sb3
      • 2.Qe2#
    • 1...Sd3
      • 2.Qxa2#
    • 1...Sb4
      • 2.Qxc3#
  • Tries
    • 1.Rxd5?
      • threat
        • 2.Sa3#
        • 2.Rd4#
      • 1...Rd4
        • 2.Sa3#
        • 2.Rxd4#
      • 1...Bxd5!
  • Keys
    • 1.Kc8!
      • threat
        • 2.Rc7#
      • 1...Qxg8
        • 2.Sa3#
      • 1...Qe6
        • 2.Sa3#
      • 1...Qf7
        • 2.Sa3#
      • 1...Rf3
        • 2.Bxd5#
      • 1...Rd4
        • 2.Sa3#
      • 1...Re4
        • 2.Bxd5#
      • 1...Sb3
        • 2.Qe2#
      • 1...Sd3
        • 2.Qxa2#
      • 1...Sb4
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • Q(j);N_PINR(D)::S(C)
    • Q(j);N_PINR(D),N_SPINQ(j),P_PINB(F),XB(G)::S(C)
    • R(h);S_CUTB(b)::B(G),XQ(j)
    • R(h);SBLOCK::S(C)
    • S(a);N_GUARD,SBLOCK::QAB(A)
    • S(a);N_GUARD,SBLOCK::QAB(A),XS(c)
    • S(c);N_GUARD::QAR1(A),XP(f)
  • Tries
    • Try
      • R(D);N_SPINR(D),XQ(j)
      • Threat
        • DUALS(2)
      • Refutation
        • B(b);P_SPINB(b),XR(D)
  • Actual
    • K(E);N_SPINR(D),P-FLIGHT
    • Threat
      • R(D)
    • Vars
      • Q(j);N_SPINQ(j),P_PINB(F),XB(G)::S(C)
      • Q(j);P_PINR(D)::S(C)
      • Q(j);::S(C)
      • R(h);S_CUTB(b)::B(G),XQ(j)
      • R(h);SBLOCK::S(C)
      • S(a);N_GUARD,SBLOCK::QAB(A)
      • S(a);N_GUARD,SBLOCK::QAB(A),XS(c)
      • S(c);N_GUARD::QAR1(A),XP(f)
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