MESON Chess Problem Database

Problem Display
PID: 180700 (qBn5/1Q2b3/p1r5/R5P1/n2NkNP1/4p1K1/8/7b w - - 0 1)

Witt, Andreas

Die Schwalbe, 2018

qBn5/1Q2b3/p1r5/R5P1/n2NkNP1/4p1K1/8/7b

#2

8 + 9

5454 Near Snap 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sc2?
      • threat
        • 2.Re5#
      • 1...Qxb8
        • 2.Qxc6#
      • 1...Bd6
        • 2.Qh7#
      • 1...Bf6
        • 2.Qh7#
      • 1...Sc5
        • 2.Qb4#
      • 1...Sd6
        • 2.Qxe7#
      • 1...Bc5!
    • 1.Sb3?
      • threat
        • 2.Re5#
      • 1...Qxb8
        • 2.Qxc6#
      • 1...Bd6
        • 2.Qh7#
      • 1...Bf6
        • 2.Qh7#
      • 1...Sc5
        • 2.Qb4#
      • 1...Sd6
        • 2.Qxe7#
      • 1...Bc5!
    • 1.Sf3?
      • threat
        • 2.Re5#
      • 1...Qxb8
        • 2.Qxc6#
      • 1...Bc5
        • 2.Qb1#
      • 1...Bd6
        • 2.Qh7#
      • 1...Bf6
        • 2.Qh7#
      • 1...Sc5
        • 2.Qb4#
      • 1...Bxf3!
    • 1.Sxc6?
      • threat
        • 2.Re5#
        • 2.Qb1#
      • 1...Qxb7
        • 2.Re5#
      • 1...e2
        • 2.Re5#
      • 1...Bc5
        • 2.Qb1#
        • 2.Qh7#
      • 1...Bb4
        • 2.Re5#
        • 2.Qxb4#
        • 2.Qh7#
      • 1...Bd6
        • 2.Qb1#
        • 2.Qh7#
      • 1...Bf6
        • 2.Qb1#
        • 2.Qh7#
      • 1...Sb2
        • 2.Re5#
      • 1...Sc3
        • 2.Re5#
      • 1...Sc5
        • 2.Qb4#
      • 1...Sab6
        • 2.Re5#
      • 1...Scb6
        • 2.Re5#
        • 2.Qxe7#
      • 1...Qxb8!
    • 1.Sde6?
      • threat
        • 2.Re5#
      • 1...Qxb8
        • 2.Qxc6#
      • 1...Bc5
        • 2.Qb1#
        • 2.Qh7#
      • 1...Bd6
        • 2.Qh7#
      • 1...Bf6
        • 2.Qh7#
      • 1...Sc5
        • 2.Qb4#
      • 1...Sd6!
    • 1.Qxc6+?
      • 1...Kxd4
        • 2.Be5#
      • 1...Qxc6!
    • 1.Qb1+?
      • 1...Kxd4
        • 2.Qd3#
      • 1...Rc2!
  • Keys
    • 1.Sde2!
      • threat
        • 2.Re5#
      • 1...Qxb8
        • 2.Qxc6#
      • 1...Bc5
        • 2.Qb1#
      • 1...Bd6
        • 2.Qh7#
      • 1...Bf6
        • 2.Qh7#
      • 1...Sc5
        • 2.Qb4#
      • 1...Sd6
        • 2.Qxe7#

Anticipated by 52475(1985-1986)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • R1(E)
      • Vars
        • Q(h);N_GUARD,P_PINS(C),XB(H)::QAB(G),XR(f)
        • B(g);OGATE,P_PINS(C)::QAB(G)
        • B(g);OGATE::QAB(G)
        • S(c);S_CUTB(g)::QAR(G)
        • S(i);N_GUARD::QAR(G),XB(g)
      • Refutation
        • B(g);
    • Try
      • S(B);
      • Threat
        • R1(E)
      • Vars
        • Q(h);N_GUARD,P_PINS(C),XB(H)::QAB(G),XR(f)
        • B(g);OGATE,P_PINS(C)::QAB(G)
        • B(g);OGATE::QAB(G)
        • S(c);S_CUTB(g)::QAR(G)
        • S(i);N_GUARD::QAR(G),XB(g)
      • Refutation
        • B(g);
    • Try
      • S(B);
      • Threat
        • R1(E)
      • Vars
        • Q(h);N_GUARD,P_PINS(C),XB(H)::QAB(G),XR(f)
        • B(g);::QAB(G)
        • B(g);OGATE,P_PINS(C)::QAB(G)
        • B(g);OGATE::QAB(G)
        • S(c);S_CUTB(g)::QAR(G)
      • Refutation
        • B(a);XS(B)
    • Try
      • S(B);XR(f)
      • Threat
        • DUALS(2)
      • Vars
        • Q(h);XQ(G)::R1(E)
        • P(b);::R1(E)
        • S(c);::R1(E)
        • S(c);S_CUTB(g)::QAR(G)
      • Refutation
        • Q(h);P_PINS(C),XB(H)
    • Try
      • S(B);
      • Threat
        • R1(E)
      • Vars
        • Q(h);N_GUARD,P_PINS(C),XB(H)::QAB(G),XR(f)
        • B(g);OGATE,P_PINS(C)::QAB(G)
        • B(g);OGATE::QAB(G)
        • S(c);S_CUTB(g)::QAR(G)
      • Refutation
        • S(i);
    • Try
      • Q(G);CHECK,XR(f)
      • Vars
        • K(d);P-FLIGHT,XS(B)::B(H)
      • Refutation
        • Q(h);XQ(G)
    • Try
      • Q(G);CHECK,N_PINR(f)
      • Vars
        • K(d);P-FLIGHT,XS(B)::QAR1(G)
      • Refutation
        • R(f);P_SPINR(f)
  • Actual
    • S(B);
    • Threat
      • R1(E)
    • Vars
      • Q(h);N_GUARD,P_PINS(C),XB(H)::QAB(G),XR(f)
      • B(g);::QAB(G)
      • B(g);OGATE,P_PINS(C)::QAB(G)
      • B(g);OGATE::QAB(G)
      • S(c);S_CUTB(g)::QAR(G)
      • S(i);N_GUARD::QAR(G),XB(g)
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