MESON Chess Problem Database

Problem Display
PID: 221370 (6n1/1QR4b/rn6/3R4/pPp1kPp1/4p1qB/4NPPb/1K6 w - - 0 1)

Baxter, FL

Il Due Mosse, 1959

6n1/1QR4b/rn6/3R4/pPp1kPp1/4p1qB/4NPPb/1K6

#2

10 + 11

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf4
      • 2.Sc3#
    • 1...Qxg2
      • 2.Bxg2#
    • 1...Bf5
      • 2.Rd4#
    • 1...Sd7
      • 2.Rxc4#
    • 1...Sa8
      • 2.Rxc4#
    • 1...Sc8
      • 2.Rxc4#
    • 1...Sf6
      • 2.Re7#
    • 1...Sh6
      • 2.Re7#
    • 1...Se7
      • 2.Rxe7#
  • Tries
    • 1.Kc2?
      • threat
        • 2.Re5#
      • 1...Qxf4
        • 2.Sc3#
      • 1...Sxd5!
    • 1.Rd1+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...Kf5!
    • 1.Rd2+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...Kf5!
    • 1.Ra5+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...Kd3!
    • 1.Rb5+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...Kd3!
    • 1.Rdc5+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...Kd3!
    • 1.Rg5+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...Kd3!
    • 1.Rh5+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...Kd3!
    • 1.Rd6+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...Kf5!
    • 1.Rdd7+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...Kf5!
    • 1.Rd8+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...Kf5!
    • 1.Rcc5?
      • threat
        • 2.Rd4#
        • 2.Qxh7#
      • 1...Qxf4
        • 2.Sc3#
        • 2.Rd4#
      • 1...Qxg2
        • 2.Bxg2#
        • 2.Rd4#
      • 1...Qxh3
        • 2.Rd4#
      • 1...Sxd5
        • 2.Qxd5#
      • 1...gxh3
        • 2.Rd4#
      • 1...Qh4
        • 2.Rd4#
      • 1...Ra7
        • 2.Rd4#
      • 1...Bf5
        • 2.Rd4#
      • 1...Bg6
        • 2.Rd4#
      • 1...Sd7
        • 2.Rxc4#
        • 2.Rd4#
      • 1...Sa8
        • 2.Rxc4#
        • 2.Rd4#
      • 1...Sc8
        • 2.Rxc4#
        • 2.Rd4#
      • 1...Sf6
        • 2.Rd4#
        • 2.Qe7#
      • 1...Sh6
        • 2.Rd4#
        • 2.Qe7#
      • 1...Se7
        • 2.Rd4#
        • 2.Qxe7#
      • 1...exf2!
    • 1.Rcd7?
      • threat
        • 2.Re5#
      • 1...Qxf4
        • 2.Sc3#
      • 1...Sxd5
        • 2.Qxd5#
      • 1...Sxd7!
    • 1.Qc6?
      • threat
        • 2.Qe6#
      • 1...Qxf4
        • 2.Sc3#
      • 1...Qxg2
        • 2.Bxg2#
      • 1...Bf5
        • 2.Rd4#
      • 1...Sd7
        • 2.Qxc4#
      • 1...Sa8
        • 2.Qxc4#
      • 1...Sc8
        • 2.Qxc4#
      • 1...Sxd5!
    • 1.f3+?
      • 1...gxf3
        • 2.Rd4#
      • 1...Qxf3!
  • Keys
    • 1.Rc6!
      • threat
        • 2.Re6#
      • 1...Kxd5+
        • 2.Rg6#
      • 1...Qxf4
        • 2.Sc3#
      • 1...Qxg2
        • 2.Bxg2#
      • 1...Sxd5
        • 2.Qxh7#
      • 1...Bf5
        • 2.Rd4#
      • 1...Sd7
        • 2.Rxc4#
      • 1...Sa8
        • 2.Rxc4#
      • 1...Sc8
        • 2.Rxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(c);SBLOCK,XP(G)::S(B)
    • Q(c);OGATE,XP(D)::B(E),XQ(c)
    • B(j);SBLOCK::QAB(I)+R(H),DCHECK
    • S(i);N_GUARD::R(J),XP(e)
    • S(k);N_GUARD::R(J)
    • S(k);N_GUARD::R(J),XS(k)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • QAB(I)+R(H),DCHECK
      • Vars
        • Q(c);SBLOCK,XP(G)::S(B)
      • Refutation
        • S(i);P_SPINS(i),XR(H)
    • Try
      • R(H);CHECK
      • Vars
        • S(i);N_GUARD,P_SPINS(i)::QAB1(I),XS(i)
      • Refutation
        • K(f);P_SPINP(g),S_FLIGHT
    • Try
      • R(H);CHECK
      • Vars
        • S(i);N_GUARD,P_SPINS(i)::QAB1(I),XS(i)
      • Refutation
        • K(f);P_SPINP(g),S_FLIGHT
    • Try
      • R(H);CHECK
      • Vars
        • S(i);N_GUARD,P_SPINS(i)::QAB1(I),XS(i)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • R(H);CHECK
      • Vars
        • S(i);N_GUARD,P_SPINS(i)::QAB1(I),XS(i)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • R(H);CHECK
      • Vars
        • S(i);N_GUARD,P_SPINS(i)::QAB1(I),XS(i)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • R(H);CHECK
      • Vars
        • S(i);N_GUARD,P_SPINS(i)::QAB1(I),XS(i)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • R(H);CHECK
      • Vars
        • S(i);N_GUARD,P_SPINS(i)::QAB1(I),XS(i)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • R(H);CHECK
      • Vars
        • S(i);N_GUARD,P_SPINS(i)::QAB1(I),XS(i)
      • Refutation
        • K(f);P_SPINP(g),S_FLIGHT
    • Try
      • R(H);CHECK
      • Vars
        • S(i);N_GUARD,P_SPINS(i)::QAB1(I),XS(i)
      • Refutation
        • K(f);P_SPINP(g),S_FLIGHT
    • Try
      • R(H);CHECK
      • Vars
        • S(i);N_GUARD,P_SPINS(i)::QAB1(I),XS(i)
      • Refutation
        • K(f);P_SPINP(g),S_FLIGHT
    • Try
      • R(J);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);XB(E)::QAB(I)+R(H),DCHECK
        • S(i);OGATE,P_SPINS(i),XR(H)::QAB1(I),XS(i)
        • P(g);XB(E)::QAB(I)+R(H),DCHECK
        • Q(c);::QAB(I)+R(H),DCHECK
        • R(h);::QAB(I)+R(H),DCHECK
        • B(j);::QAB(I)+R(H),DCHECK
      • Refutation
        • P(b);XP(C)
    • Try
      • R(J);
      • Threat
        • QAB(I)+R(H),DCHECK
      • Vars
        • Q(c);SBLOCK,XP(G)::S(B)
        • S(i);OGATE,P_SPINS(i),XR(H)::QAB1(I),XS(i)
      • Refutation
        • S(i);XR(J)
    • Try
      • Q(I);
      • Threat
        • QAR2(I)
      • Vars
        • Q(c);SBLOCK,XP(G)::S(B)
        • Q(c);OGATE,XP(D)::B(E),XQ(c)
        • B(j);SBLOCK::QAB(I)+R(H),DCHECK
        • S(i);N_GUARD::QAR2(I),XP(e)
      • Refutation
        • S(i);P_SPINS(i),XR(H)
    • Try
      • P(C);CHECK
      • Vars
        • P(g);XP(C)::QAB(I)+R(H),DCHECK
      • Refutation
        • Q(c);XP(C)
  • Actual
    • R(J);
    • Threat
      • R(J)
    • Vars
      • K(f);CHECK,OGATEB,S_FLIGHT,XR(H)::QAB(I)+R(J)
      • Q(c);SBLOCK,XP(G)::S(B)
      • Q(c);OGATE,XP(D)::B(E),XQ(c)
      • S(i);SBLOCK,XR(H)::QAB(I),XB(j)
      • B(j);SBLOCK::R1(H)
      • S(i);N_GUARD::R(J),XP(e)
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