MESON Chess Problem Database

Problem Display
PID: 261608 (q1b5/2bn4/2nQp3/pNN4R/2k5/P3r2p/2P3PK/BR6 w - - 0 1)

Weber, Jacques

2nd Prize, Schweizerische Schachzeitung, 1978

q1b5/2bn4/2nQp3/pNN4R/2k5/P3r2p/2P3PK/BR6

#2

10 + 10

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa3
      • 2.Sxa3#
    • 1...Rd3
      • 2.cxd3#
    • 1...Rg3
      • 2.Qxe6#
    • 1...Bxd6+
      • 2.Sxd6#
    • 1...Sce5
      • 2.Qd4#
    • 1...Sxc5
      • 2.Rxc5#
  • Tries
    • 1.Sb3?
      • threat
        • 2.Sd2#
      • 1...Bxd6+
        • 2.Sxd6#
      • 1...Rxb3
        • 2.cxb3#
      • 1...Rd3
        • 2.cxd3#
      • 1...Re2!
    • 1.Sd3?
      • threat
        • 2.Sb2#
      • 1...Bxd6+
        • 2.Sxd6#
      • 1...Rxd3
        • 2.cxd3#
      • 1...Sce5
        • 2.Qd4#
      • 1...Sc5
        • 2.Rxc5#
      • 1...Sde5
        • 2.Qc5#
      • 1...e5
        • 2.Qe6#
      • 1...Re5!
    • 1.Sxd7?
      • threat
        • 2.Rc5#
      • 1...Bxd6+
        • 2.Sxd6#
      • 1...Re5
        • 2.Qd3#
      • 1...Bb6
        • 2.Sxb6#
      • 1...Se5
        • 2.Qc5#
        • 2.Qd4#
      • 1...e5
        • 2.Qc5#
        • 2.Qe6#
      • 1...Qa7!
    • 1.Rh4+?
      • 1...Sd4
        • 2.Rxd4#
      • 1...Re4!
  • Keys
    • 1.Sa4!
      • threat
        • 2.Sb2#
      • 1...Bxd6+
        • 2.Sxd6#
      • 1...Rb3
        • 2.cxb3#
      • 1...Re5
        • 2.Qd3#
      • 1...Sce5
        • 2.Qd4#
      • 1...Sc5
        • 2.Rxc5#
      • 1...Sde5
        • 2.Qc5#
      • 1...e5
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(a);XP(F)::S(G),XR(a)
    • R(a);OGATE::P(C),XR(a)
    • R(a);N_PINQ(J)::QAB(J),XP(f)
    • B(g);CHECK,XQ(J)::S(G),XB(g)
    • S(e);N_PINQ(J)::QAR1(J)
    • S(h);OGATE,XS(H)::R1(I),XS(h)
  • Tries
    • Try
      • S(H);
      • Threat
        • S(H)
      • Vars
        • B(g);CHECK,XQ(J)::S(G),XB(g)
        • R(a);OGATE,XS(H)::P(C),XR(a)
        • R(a);OGATE::P(C),XR(a)
      • Refutation
        • R(a);P_PINP(D)
    • Try
      • S(H);
      • Threat
        • S(H)
      • Vars
        • B(g);CHECK,XQ(J)::S(G),XB(g)
        • R(a);OGATE,XS(H)::P(C),XR(a)
        • S(e);N_PINQ(J)::QAR1(J)
        • S(h);N_GUARD::R1(I),XS(h)
        • S(h);N_PINQ(J)::QAR1(J)
        • P(f);N_PINQ(J)::QAB(J)
      • Refutation
        • R(a);N_PINQ(J)
    • Try
      • S(H);XS(h)
      • Threat
        • R1(I)
      • Vars
        • B(g);CHECK,XQ(J)::S(G),XB(g)
        • R(a);N_PINQ(J)::QAB1(J)
        • B(g);N_GUARD,N_PINQ(J)::S(H),XB(g)
      • Refutation
        • Q(i);
    • Try
      • R(I);CHECK
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::R1(I),XS(e)
      • Refutation
        • R(a);P_SPINR(a)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • B(g);CHECK,XQ(J)::S(G),XB(g)
      • R(a);OGATE::P(C),XR(a)
      • R(a);N_PINQ(J)::QAB1(J)
      • S(e);N_PINQ(J)::QAR1(J)
      • S(h);N_GUARD::R1(I),XS(h)
      • S(h);N_PINQ(J)::QAR1(J)
      • P(f);N_PINQ(J)::QAB(J)
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